Sessional_Paper_1901 — Page 803

Sessional Papers 議政定例兩局文件 All

798

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. Also faint linear spots on wing field. The black is not so deep as in the previous species.

Legs black, white-banded. Faint white bands at apices of tarsi. Antennæ grey. Palpi black, white-banded, and white-tipped. Proboscis dark brown, with pale tip.

Thorax brown, with linear darker markings.

Abdomen brown, unbanded.

Length, 24 mm.

Wings unspotted. Transparent.

Legs brown.

Unbauded.

Antennæ, pulpi, and proboscis brown.

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.

F-Culex Anulus.

A new species.

White-banded at joints. White bands at apices of tarsi.

Wings unspotted. Dark veins.

Legs brown.

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 Sericeus.

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.

H.-Culex Recsii.

A new species.

Wings nuspotted. Greyish brown.

Legs yellowish brown. Unbanded.

Antenne 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. Antenne 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 Obturbuns. (Walker).

(Armigeres Obturbans. Theobald).

Mr. Theobald recognised the specimens of this which I sent him as Culex Obturbaus, 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 1 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, 64 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. (R. Desvoidy).

Veins almost nude.

Proboscis yellowish.

Thorax reddish brown, with three indistinct brown hairy lines.

Abdomen yellowish brown, with pale yellow bands at apices of segments. Length, 7 mm.

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