M 130
II. GENERAL MOSQUITO SURVEY OF THE COLONY.
Anophelines.
21. The number and species of the various Anopheline larvae examined are given in Table II. Table III gives the number and species of the imagines obtained from pupae collected and from pupae obtained from the larger larvae.
22. A. maculatus. Larvae were collected from the usual breeding places, streams, seepages, and ditches. Many adults were obtained by night catching done in the Dairy Farm cow byres and in pigsties at Little Hong Kong; also by day catching done in the screened lines at Shing Mun. Under ordinary circumstances this mosquito does not figure to any extent in day catches owing to its partiality for the blood of cattle and pigs, and to its disinclination to remain a long time in the building in which it has fed.
23. A. minimus. Larvae were mostly met with in hill streams and irrigation ditches, sometimes in seepages. Few were collected from those portions of streams in which the grade is steep. In morning catches adults were readily captured in human habitations made of bamboo and roofed with thatch, also in dark ill-ventilated village cow byres and pigsties.
24. A. fluviatilis. The larvae of this species are practically indistinguishable from those of A. minimus. Adults have been obtained in the course of routine catches mainly during the dry months of the year.
25. Adult specimens have been encountered by the staff of the Bureau, and by Capt. Burke R.A.M.C. whilst working at this Laboratory, which it is difficult to allocate to either of the species A. minimus or A. fluviatilis. A number of these were taken to London by the Malariologist and submitted for opinion to Dr. Edwards, British Museum, and to Sir R. Christophers. The matter is awaiting further investigation.
26. A hyrcanus var. sinensis. The larvae were met with in stagnant water with vegetation, in wet cultivation especially rice at certain times of the year, in pools amongst rice stubble, and in sluggish streams and ditches.
27. The adults formed a high proportion of the Anophelines obtained in night catches done in pigsties at Little Hong Kong. In the last quarter of the year large numbers were obtained from screened lines at Shing Mun and Patheung. Like A. maculatus and for the same reasons, they do not figure to any great extent in day catches under ordinary circumstances.
M 130
II. GENERAL MOSQUITO SURVEY OF THE COLONY.
Anophelines.
21. The number and species of the various Anopheline larvae examined are given in Table II. Table III gives the number and species of the imagines obtained from pupae collected and from pupae obtained from the larger larvae.
22. A. maculatus. Larvae were collected from the usual breeding places, streams, seepages, and ditches. Many adults were obtained by night catching done in the Dairy Farm cow byres and in pigsties at Little Hong Kong; also by day catching done in the screened lines at Shing Mun. Under ordinary circumstances this mosquito does not figure to any extent in day catches owing to its partiality for the blood of cattle and pigs, and to its disinclination to remain a long time in the building in which it has fed.
23. A. minimus. Larvae were mostly met with in hill streams and irrigation ditches, sometimes in seepages. Few were collected from those portions of streams in which the grade is steep. In morning catches adults were readily captured in human habitations made of bamboo and roofed with thatch, also in dark ill-ventilated village cow byres and pigsties.
24. A. fluviatilis. The larvae of this species are practi- cally indistinguishable from those of A. minimus. Adults have been obtained in the course of routine catches mainly during the dry months of the year.
25. Adult specimens have been encountered by the staff of the Bureau, and by Capt. Burke R.A.M.C. whilst working at this Laboratory, which it is difficult to allocate to either of the species A. minimus or A. fluviatilis. A number of these were taken to London by the Malariologist and submitted for opinion to Dr. Edwards, British Museum, and to Sir R. Christophers. The matter is awaiting further investigation.
26. A hyrcanus var. sinensis. The larvae were met with in stagnant water with vegetation, in wet cultivation especially rice at certain times of the year, in pools amongst rice stubble, and in sluggish streams and ditches.
27. The adults formed a high proportion of the Anophelines obtained in night catches done in pigsties at Little Hong Kong. In the last quarter of the year large numbers were obtained from screened lines at Shing Mun and Patheung. Like A. maculatus and for the same reasons, they do not figure to any great extent in day catches under ordinary circumstances.
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