227
C-Anopheles Minimus.
A new species.
At first sight appears simply a dwarf variety of Anopheles Maculatus. All its markings are less distinct, and it is exceedingly minute.
Wings spotted, transparent. Four linear black spots along costa, with three pale intervals. wing field. The black is not so deep as in the previous species.
Legs black, white-banded. Faint white bands, at apices of tarsi. Antennas grey, Palpi black, white-banded, and white-tipped. Proboscis dark brown, with pale tip.
Thorax brown, with linear darker markings.
Abdomen brown, unbanded.
Length, 2 mm.
Wings unspotted. Transparent.
Legs brown. Unbanded.
Antenna, palpi, and proboscis brown.
Also faint linear spots on
In some specimens the palpi are brown and unbanded,
E---Culex Fatigans (Wiedemann),
Thorax brown, with golden scales, and with a median and two lateral dark bare lines. Abdomen banded. Segments brown, with white bands at bases. Length, 4 mm.
A.
Probably a new species,
Wings smoky, owing to thick black scales on veins, unspotted.
Legs black, unbanded,
Antennæ, palpi, and proboscis black.
Thorax black.
Abdomen dark brown.
Length, 5 mm.
Thorax brown.
Abdomen brown.
Length 4 mm.
Unbanded
Unbanded.
0.
Probably a new species.
Wings unspotted. Dark veins.
F-Culex Anulus.
A new species.
Legs brown. White-banded at joints. White bands at apices of tarsi.
Antennæ grey. Palpi brown. Proboscis brown, with broad white band at the middle of it. Thorax brown, with lighter linear markings,
Abdomen brown, with white bands at bases of segments. Length 3 mm.
G-Culex Serierus.
A new species.
Wings unspotted, brown, transparent, with prominent veins. Legs brown, unbanded,
Antennæ grey. Palpi and proboscis brown.
Thorax brown, with golden-yellow tomentum.
Abdomen speckled, blackish brown, with yellowish white bands at bases of segments. Length, 5 mm.
Wings unspotted. Greyish brown.
Legs yellowish brown,
Unbanded.
H.-Culex Reesii.
A new species.
Antenna grey. Palpi brown, with black tip in male. Proboscis brown,
Thorax brown, with faint linear marking.
Abdomen speckled, blackish brown, with faint pale bands at bases of segments.
Length, 4 mm.
I.--Culex Scutellaris. (Walker).
(Stegomyia Scutellaris. Theobald.)
There are several varieties of this insect, differing markedly in size. There is also one in which the median white line, while present on the head, is absent from the thorax, which is a very dark brown. Probably some of these would by entomologists be described as different species. The one I describe may be regarded as the type. The different varieties occur in different parts of the Colony.
Wings unspotted. Greyish, with dark scales on veins.
Proboscis black.
Legs dark, with whitish femur, and with white bands at bases of tarsi. Antennæ grey. Palpi white-tipped in female, with four white bands in male. Head and thorax with median white line, with silvery white spots on sides of thorax. Abdomen black, with silvery white bands at bases of segments. Length, 4 mm.
K-Culex Obturbans. (Walker.)
(Armigeres Obturbans. Theobald.)
Mr. Theobald recognised the specimens of this which I sent him as Culex Obturbans, but many of the specimens agree more closely with the Culex Ventralis of Walker. It may be that sub-varieties of both, approaching each other in characteristics, are present in the Colony. They are both large species. While I adopt the name Culex Obturbans, the following description of the insect, as it is now in large numbers before me, is very like the description of Culex Ventralis in Giles's Handbook of Mosquitoes.
Wings greyish, unspotted. Veins black, with fringe of large scales.
Legs almost black, unbanded. Femur pale underneath.
Antennæ grey. Palpi brown. Proboscis black.
Thorax brownish black, unadorned above, with white spots on sides.
Abdomen black, dorsally unbanded, but with pure white bands on under surface. Length, 6.5 mm.
In some specimens the thorax and abdomen are more brown than black,
Wings unspotted, clear, transparent.
Legs yellowish, unbanded.
Antennæ pale brown. Palpi brown.
M-Culex Concolor.
Veins almost nude.
Proboscis yellowish.
(R. Desvoidy.)
Thorax reddish brown, with three indistinct brown hairy lines. Abdomen yellowish brown, with pale yellow bands at apices of segments. Length, 7 mm.
Wings unspotted, transparent, with dark scales on veins. Legs black, with white bands on bases of tarsi,
Antennæ grey. Palpi black, and in the male with white band at middle.
Proboscis dark brown.
There is a variety of this insect with a darker thorax and abdomen, greenish-black in colour.
Probably Culex Fuscennus (Wiedemann).
Wings unspotted. Dark owing to thick covering of large scales on veins.
Legs brown, unbanded.
Antennæ grey. Palpi and proboscis brown.
Thorax brown, with grey tomentum.
Abdomen black, with faint grey bands at bases of segments.
Length, 4 mm.
R.
Under "R" I have included two small dark species, which to the naked eye look alike, but show marked differences on examination with a lens. I shall describe them as "r" and "r1"
R.-Probably a new species.
Wings unspotted. Veins thickly covered with dark scales.
Legs dark brown, unbanded.
Antennæ, palpi, and proboscis dark brown.
Thorax very dark brown. Fine linear markings of grey hairs. Abdomen black, with faint grey bands at bases of segments. Length, 3.4 mm.
R1.
Probably a new species.
Wings unspotted, transparent. Veins almost nude.
Legs dark reddish brown, unbanded.
Antennæ, palpi and proboscis black.
Thorax black. Faint pale linear marking.
Abdomen black, unbanded.
Length, 4 mm.
S.
Probably a new species,
Wings unspotted, greyish, with dark scales on veins,
Legs dark, with whitish femur, and white bands at bases of tarsi. Antennæ greyish. Palpi white-tipped in female, with white bands in male. Proboscis black. Thorax dark reddish-brown, with white spots on sides. Abdomen black, unbanded.
Length, 2.4 mm.
APPENDIX III
Directions for the Destruction of the Larvæ of Mosquitoes, embodied in a General Order to Officers in charge of Police Stations, 22nd June, 1901.
The one great principle to act on is to prevent or abolish all stagnant water. Careful search should be systematically made in the neighbourhood of all dwellings for any vessels that might contain stagnant water from rain or any other source; and arrangement should be made to keep them empty, or to have them emptied, or the water changed, once a week.
If running streams or ravines be anywhere near a station, efforts should be made to confine the water to a central channel. Side pools should be filled up; rock hollows should be smoothed out by cement or concrete, or a channel should be made from them by means of hammer and chisel; and a ready exit, or drainage under ground, should take the place of all oozings of water from the ground surface.
Where this guiding principle cannot be applied, or until it can be applied, still or stagnant water surfaces should be systematically inspected for the presence of larvæ of mosquitoes, and measures adopted to destroy them. This is most conveniently done in this locality by sprinkling the water surface with kerosene oil. The oil spreads in a very thin layer over the surface, and prevents the larva from rising to breathe the air, which results in their speedy death. A tea-spoonful of oil to each square yard of water surface is sufficient, and, if there is little movement of the water, once a week is often enough.
About one
As the colour of the larva assimilates itself to the colour of the water it inhabits, the larvæ cannot usually be easily seen in the water pool itself. It is necessary to dip up the water with a rapid dip of a large spoon or a saucer.
241
227
C-Anopheles Minimus.
A new species.
At first sight appears simply a dwarf variety of Anopheles Maculatus. All its markings are less distinct, and it is exceedingly minute.
Wings spotted, transparent. Four linear black spots along costa, with three pale intervals. wing field. The black is not so deep as in the previous species.
Legs black, white-banded. Faint white bands, at apices of tarsi. Antennas grey, Palpi black, white-banded, and white-tipped. Proboscis dark brown, with pale tip.
Thorax brown, with linear darker markings.
Abdomen brown, onbanded.
Length, 2 rum.
Wings unspotted. Transparent.
Legs brown. Unbanded.
Anterma, palpi, and proboscis brown.
Also faint linear spots on
In some specimens the palpi ure brown and unbanded,
E---Culex Fatigans (Wiedemann),
Thorax brown, with golden scales, and with a median and two lateral dark bare lines. Abdomen banded. Segments brown, with white bands at bases. Length, 4 mm.
A.
Probably a new species,
Wings smoky, owing to thick black scales on veins, uuspotted.
Legs black, unbanded,
Autenue, palpi, and proboscis black.
Thorax black.
Abdomen dark brown.
Length, 5 mm.
Thorax brown.
Abdomen brown.
Length 4 mm.
Unbanded
Unbanded.
0.
Probably a new species.
Wings unspotted. Dark veins.
F-Culex Anulus.
A new species.
Legs brown. White-banded at joints. White bands at apices of tarsi.
Antenne grey. Palpi brown. Proboscis brown, with broad white band at the middle of it. Thorax brown, with lighter linear markings,
Abdomen brown, with white bands at bases of segments. Length 3 mm.
G-Culex Serierus.
A new species.
Wings nospotted, brown, transparent, with prominent veins. Legs brown, unbanded,
Antenne grey. Palpi and proboscis brown.
Thorax brown, with golden-yellow tomentum.
Abdomen speckled, blackish brown, with yellowish white bands at bases of segments. Length, 5 mm.
Wings unspotted. Greyish brown.
Legs yellowish brown,
Unbanded.
H.-Culex Reesii.
A new species.
Antenna grey. Pulpi brown, with black tip in male. Proboscis brown,
Thorax brown, with fuint linear marking.
Abdomen speckled, blackish brown, with faint pale bands at bases of segments.
* Length, 4 mm.
I.--Culex Scutellaris. (Walker).
(Stegomyia Sentellaris. Theobald.)
There are several vurieties of this insect, differing markedly in size. There is also oue in which the median white line, while present on the head, is absent from the thorax, which is a very dark brown. Probably some of these would by cntomologists be described as different species. The one I describe may be regarded as the type. The different varieties necur in different parts of the Colony.
Wings unspotted. Groyish, with dark scales on veins.
Proboscis black.
Legs dark, with whitish femur, and with white bands at bases of tarsi. Autenue grey. Palpi white-tipped in female, with four white bands in male. Head and thorax with median white line, with silvery white spots on sides of thorax. Abdomen black, with silvery white bands at bases of segments. Length, 4 min.
K-Culex Obturbans. (Walker.)
(Armigeres Obturbans. Theobaldj.
Mr. Theobald recognised the specimens of this which I sent him as Culex Obturbans, but many of the specimens agree more closely with the Culex Ventralis of Walker. It may be that sub-varieties of both, approaching each other in charac teristics, are present in the Colony. They are both large species. While I adopt the name Culex Obturbans, the following deseription of the insect, as it is now in large numbers before ine, is very like the description of Culex Ventralis in Giles's Handbook of Mosquitoes.
Wings greyish, unsported. Veins black, with fringe of large scales.
Legs almost black, unbanded. Femur pale underneath.
Antenna grey. Palpi brown. Proboscis black.
Thorax brownish black, unadorned above, with white spots on sides.
Abdomen black, dorsally unbanded, but with pure white bands on under surface. Length, 65 mm.
In some specimens the therax and abdomen are more brown than black,
Wings unspotted, clear, transparent.
Legs yellowish, unbanded.
Autoune pale brown. Palpi brown.
M-Culex Concolor.
Veins almost nude.
Proboscis yellowish.
(R. Desvaidy.)
Thorax reddish brown, with three indistinct brown hairy lines. Abdomen yellowish brown, with pale yellow bands at apices of segments. Length, 7 mm.
Wings unspotted, transparent, with dark scules on veins. Legs black, with white bands on bases of tursi,
Anteune grey. Palpi black, and in the male with white band at middle.
Proboscis dark browu.
There is a variety of this insect with a darker thorax and abdomen, greenish-black in colour.
Probably Culex Fusennus (Wiedemann).
Wings unspotted. Dark owing to thick covering of large scales on veins.
Legs brown, aubanded.
Antennæ grey. Palpi and proboscis brown.
Thorax brown, with grey tomentum.
Abdomen black, with faint grey bands at bases of segmouts.
Length, 4 mm.
R.
Under" I have included two small dark species, which to the naked eye look alike, but show nacked differences on examination with a lens. I shall describe them as "r" and "r"
R.-Probably a new species.
Wings unspotted. Veins thickly covered with dark scales.
Legs dark brown, nobauded.
Antennæ, palpi, and proboscis dark brown.
Thorax very dark brown. Fine linear markings of grey hairs. Abdomen black, With faint grey bands at bases of segments. Length, 34 mm.
R1.
Probably a new species.
Wings unspotted, transparent. Veius almost nude.
Legs dark reddish brown, unbanded.
Antenum, palpi aul proboseis black.
Thorax black. Faint pale linear marking.
Abdomen bluck, unbanded.
Length, 4 mm.
S.
Probably a new species,
Wings unspotted, greyish, with dark scales on veina,
Legs dark, with whitish femur, and white bands at bases of tarsi. Antenna greyish. Palpi white-tipped in female, with white bands in male. Proboscis black. Thorax dark reddish-brown, with white spots on sides. Abdomen black, unbanded.
Length, 24 mm.
APPENDIX III
Directions for the Destruction of the Larvæ of Mosquitoes, embodied in a Generul Order to Officers in charge of Police Stations, 22nd June, 1901.
The one great principle to act on is to prevent or abolish all stagnant water. Careful search should be systematically made in the neighbourhood of all dwellings for any vessels that might contain stagnant water from rain or any other source; and arrangement should be made to keep them empty, or to have them emptied, or the water changed, once a week.
If running streams or ravines be anywhere near a station, efforts should be made to confine the water to a central channel. Side pools should be filled up; rock hollows should be smoothed out by cenient or concrete, or a channel should be made from them by means of hammer and chisel; and a ready exit, or drainage under ground, should take the place of all oozings of water from the ground surface.
Where this guiding principle cannot be applied, or until it can be applied, still or stagnant water surfaces should be systematically inspected for the presence of larvæ of mosquitoes, and measures adopted to destroy them. This is most conveniently done in this locality by sprinkling the water surface with kerosene oil. The oil spreads in a very thin layer over the surface, and prevents the larva from rising to breathe the air, which results in their speedy death. tea-spoonful of oil to each square yard of water surface is sufficient, and, if there is little movement of the water, once a week is often enough.
About one
As the colour of the larva assimilates itself to the colour of the water it inhabits, the larvæ camuot usually be easily seen in the water pool itself It is necessary to dip up the water with a rapid dip of a large spoon or a saucer.
241
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