8 ^ INSECUTOR INSClTlyli MKNSTRUUS 



(Williston, U. S. Dept. Agr., Div. Ornith. & Mamol., No. Am. 

 Fauna, No. 7, 253, 1893). The name aikcnii Aiken will take 

 its place (Brit. Guiana Med. Ann., 1900, 60, 1907). We hope 

 this association is correct ; but on account of the doubt, propose 

 the name ocossa, as above, so as not to leave our species pos- 

 sibly nameless. 



If this is in fact Gnophodcomyio aikenii Aiken (inornata 

 Theob. not Will.), we would point out that Gnophodeomyia 

 will fall to Melanoconion and the species will stand as Culex 

 (Melanoconion) aikenii Aiken (= i)iornafa Theob. = ocossa 

 D. &K.). 



Aedes thaxteri, new species. 



Proboscis and palpi black; vertex of head with a golden 

 stripe, dark brown subdorsally and silvery scaled on the sides. 

 Mesonotum brown, with two narrow golden lines running 

 back two-thirds, followed by a single narrow golden line and 

 two sublateral golden lines on the posterior half of mesono- 

 tum; lateral line narrow, silvery. Abdomen bluish black 

 above, with lateral quadrate silvery spots at the bases of the 

 segments, most distinct posteriorly ; venter yellowish white, 

 banded with black. Legs black-scaled, femora yellowish white 

 beneath nearly to tips ; knee spots silvery ; fore tarsi unmarked, 

 mid tarsi with a white spot at the base of the first joint, hind 

 tarsi with white rings as the bases of the first three joints, the 

 last two unmarked. Wing-scales black. Claws of the tarsi 

 simple. 



Type, female. No. 21704, U. S. Nat. Mus. ; Grand Etang, 

 Grenada, West Indies, bred from larvae in bracts of Hcliconia, 

 November, 1912 (R. Thaxter). 



The larva falls in the table with hnsckii Coq. Head rounded ; 

 antennae small, with a single hair. Short abdominal tufts stel- 

 late ; lateral comb of the eighth segment of large spines in a 

 long patch about two rows deep ; air-tube stout, about three 

 times as long as wide, the pecten of five long spines, then a 

 three-haired tuft, followed after a little space by one or two 

 more spines, but the spacing is not such that they appear de- 



