M 65
341. Flushing Tank.
De Villiers flushing tank-construction of which was commenced during 1937, was completed during the year.
342. Four tables are appended. The first gives details of 6,750 anopheline larvae examined microscopically for identification purposes, the second relates to some 1,409 adults hatched out from larvae and pupae, the third summarises the results of precipitin tests on bloods from mosquitos caught in three types of shelters in the village of Kap Lung; while the fourth gives a summary of systematic catches and dissections to ascertain the presence of malarial infection of anophelines caught at Pat Heung Camp from the month of January to August, 1938, in two screened lines. In addition, catching was also done in villages outside the half-mile area around these lines. Of 1,094 anophelines obtained approximately 48 per centum were A. minimus, 27 per centum A. hyrcanus, 19 per centum A. jeyporiensis, 3 per centum A. vagus, 1 per centum A. fluviatilis.
J. B. MACKIE,
M.B., CH.B. (Edin.), D.P.H. (Liv.), D.T.M. (Liv.).
Government Malariologist.
Table XLV.
ANOPHELINE LARVAE EXAMINED MICROSCOPICALLY.
Page ...
M 65
341. Flushing Tank.
De Villiers flushing tank-construction of which was commenced during 1937, was completed during the year.
342. Four tables are appended. The first gives details of 6,750 anopheline larvae examined microscopically for identification purposes, the second relates to some 1,409 adults hatched out from larvae and pupae, the third summarises the results of precipitin tests on bloods from mosquitos caught in three types of shelters in the village of Kap Lung; while the fourth gives a summary of systematic catches and dissections to ascertain the presence of malarial infection of anophelines caught at Pat Heung Camp from the month of January to August, 1938, in two screened lines. In addition, catching was also done in villages outside the half-mile area around these lines. Of 1,094 anophelines obtained approximately 48 per centum were A. minimus, 27 per centum A. hyrcanus, 19 per centum A. jeyporiensis, 3 per centum A. vagus, 1 per
centum A. fluviatilis.
J. B. MACKIE,
M.B., CH.B. (Edin.), D.P.HI. (Liv.), D.T.M. (Liv.).
Government Malariologist.
Table XLY.
ANOPHELINE LARVAE EXAMINED MICROSCOPICALLY.
A.
A. jeypori-
Month.
A. maculatus.
A. hyrcanus
A. aitkenii
minimus.
var,
sinensis
ensis var. candidi- ensis.
A. karwari.
var. ben- galensis.
January
887
140
149
February ..
246
268
87
21
2
March
112
127
16
April
36
149
50
24
May
71
52
June
37
3
81
July
90
91
37
106
A. splendidus.
Totals.
1,176
624
255
14
273
54
177
61
182
324
August
8
September
566
301
55
6
128
1,056
October
198
76
19
292
November
277
248
11
51
587
December
929
615
151
101
1,796
Totals
...
3,457
2,018
689
202
24
2
358
6,750
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