OTHER GENERA OF BIOSQUITOES 155 



Stegomyia, Toxorhjnicliites, Uranotsenia and 

 Concliyliastes. 



As will be pointed out and fully explained in Chapter 

 X., these four generic names are here used for certain 

 American mosquitoes for the first time. I am able to use 

 them in this book throug-h the great courtesy of Mr. F. V. 

 Theobald, of Wye, England, who has sent me proof sheets 

 of his monograph of the mosquitoes of the world, now 

 being published by the British Museum. Stegomyia 

 includes, as has already been shown, the yellow-fever 

 mosquito, S. fasciata, and it also includes the species 

 mentioned in my previous writings as Cidex signifer Co- 

 quillett, and which has been captured in the District of 

 Columbia and Virginia by Messrs. Coquillett, Barber, and 

 Pratt. Toxorhynchites includes the species previously 

 referred to as MegarJiinas rutilus and which must now be 

 known as Toxorhyncldtes rutilus. Uranotsenia includes the 

 North American species previously known as Aedes sap- 

 jy'n'Jiinus. Concliyliastes includes two species formerly 

 j)laced in the genus Culex and which must now be known 

 as Conchyliastes musieus Say and (J oneJiyJ tastes posiicatus 

 Wied. The former species has been taken in Pennsjdva- 

 nia, Virginia, District of Columbia, and Texas by Messrs. 

 Johnson, Pratt, Thayer, and Barber. 



