18 MACFIE AND INGRAM. — CULICINE LARVAE FROM THE GOLD COAST. 



base ; the pecten, which appears to be formed of 12-15 truncated scales when looked 

 at from the side, extends to just beyond the middle of the siphon. The scales of the 

 pecten are so regularly arranged as to give the impression of a palisade and are 

 followed by a pediculate tuft of simple hairs. The siphon measures a quarter of the 

 length of the abdomen and its valves are large. The anal segment is longer than it is 

 wide (18 units to 12) and has a distinct beard and tufts of hairs on the dorsum, there 

 being also two tufts of stellate hairs laterally ; the posterior edge seems to be less 

 conspicuously fringed with spicules than is the case in the larva of U. balfouri. 



This larva appears to resemble that of U. halfouri closely (in its natural conditions 

 it should, however, be readily distinguished by its lighter general colour and pale- 

 coloured head), but the spines of the comb are more numerous and more uniform in 

 size. In TJ . balfouri these spines rarely exceed six in number, and are more widely 

 separated, one spine being usually much larger than the others. 



Pupa. — The pupa shows the same peculiarly formed plates as are seen in that of 

 U. balfouri, described by Wesche (Bull. Ent. Kes. i, p. 50) as knife-like. 



Breeding place. — The larvae were found, together with those of Mimomyia plumosa 

 and M. hispida, in marshy ground along the banl^s of the Sunyani stream. 



We have to express our indebtedness to Mr. F. W. Edwards, of the British Museum, 

 for kindly identifying the mosquitos bred from these larvae ; he has also been good 

 enough to suggest certain emendations in the descriptions here given, and has 

 supervised the preparation of the admirable drawings by Mr, A. J. E. Terzi, 



