242 
Anopheles in Flanders 
GENERAL NOTES ON THE ADULT AND LARVAL ANOPHELINES FOUND. 
At various times during 1915, 1916 and 1918 about 40 adult Anophelines 
of this area have been examined by the writer and all proved to be A. maculi- 
pennis. Of this number 27 were captured wild and the remainder reared from 
larvae or pupae. Only two of these were males, both being hatched in 
captivity. In addition Father Legros, R.C., C.F., informs me that specimens 
which he collected alive at Moulle and which were identified for him at the 
British Museum proved to be of the same species. No records or specimens 
of bifurcatus or plumbeus ( nigripes) have come to the writer’s notice in this 
region. 
A certain amount of interest is attached to the capture by Capt. Rankin, 
R.A.M.C., of 23 maculipennis , all females, out of a total catch of 31 mos¬ 
quitoes obtained in an afternoon from the inner gas curtain of a dark, damp 
aid-post. No discrimination was exercised in taking the specimens. This is 
the only relatively large catch of adults which has come to the writer’s notice 
in Flanders, all other catches yielding usually one, and not more than two, 
specimens. 
The proportion of Anophelines to Culicines cannot be stated even approxi¬ 
mately but judging from general observations on larvae and adults it must 
be very small. 
As regards the larvae captured during September 1918, the only remark 
that may be made is that no seasonal preponderance of any one size of larvae 
could be detected. 
NUMBER, NATURE AND CHARACTER OF ANOPHELINE WATERS 
DISCOVERED. 
The total number of examinations made was at least 1233, all except 
12 relating to waters, these 12 exceptions referring to adult specimens cap¬ 
tured. The exact number of examinations is uncertain as certain collectors 
forwarded approximations only of the number of waters coming under their 
survey. Of the total number of examinations, about 558 were made by the 
writer—at least 210 in the summers of 1915 and 1916, and 348 during the 
month of September, 1918—and 675 by the various collectors. Out of these 
1233 records, 178 show the location of Anopheline haunts. The proportion 
of Culicine waters cannot be estimated as collectors have not furnished full 
enough details, most contenting themselves with noting the Anopheline waters 
only. Of the 178 Anopheline haunts 133 were discovered by the writer, 67 in 
1915 and 1916 and 66 in 1918, and 45 by collectors, 5 in 1915 and 1916 and 
40 in 1918. Only 5 of the Anopheline records refer to adults. The nature of 
the 173 Anopheline waters is given in the following table. 
