172 



J. W. SCOTT MACFIE AND A. INGRAM. 



0. irritans, 0. hngipalpis, 0. nigricephalus, 0. jnmcfothoracis, Stegomyia africana, 

 S. apicoargentea, S. fasciata, S. luteocephala, Taeniorhynchus annetti, T. aurites, 

 T. metallicus, Toxorhynchites hrevipalpis, Uranotaenia balfouri and U. mashonaensis, 

 and to these no doubt a considerable number of additions have been made since 1913. 

 During eight of the twelve months selected for this investigation, namely, from 

 December 1914 to July 1915, one of us was living in a small bungalow not far from the 

 laboratory (see Map) and collected all the mosquitos he could. Owing to 

 preoccupation with other work no systematic collection was undertaken, but any 

 mosquitos that obtruded themselves were secured if possible, and his servants were 

 instructed to capture any that they they found in the kitchen and their sleeping room. 

 In this way 280 specimens referable to fourteen species were collected, which are 

 enumerated in Table VI, and beside them is placed a list of the larvae found breeding 

 in compounds during the same period. The contrast is rather a remarkable one. 



Table VI. 



The mosquitos, arranged in order according to the frequency of occurrence, found 



at Accra, (a) as adults in bungalow A, 1, December 1914 to July 1915, 



and (6) as larvae in the samples sent to the laboratory by the 



Medical Officer of Health during the same period. 



Adults. 



Larvae. 



