274 MOSQUITOES 



the United States fauna; Janthinosoma varipes (Coq.) has previously been 

 found only in Mexico and in Mississippi; Culex confirmatus (Arrib.) is a West 

 Indian form which is also found in the State of Louisiana, probably by 

 accidental commercial introduction ; Culex cyariescens Coq., has previously been 

 found only in south Texas, and Culex nanus Coq., originally described from 

 Cuba, has for its United States locality only Key West, where it is probably 

 also an accidental commercial importation. Other forms have a very wide dis- 

 tribution, certain of them, like Culex soUicitans Walk., C. territans Walk., and 

 C. trivittatus Coq., extending north to New England. 



It will thus appear that the report is of very considerable interest, and on 

 behalf of the U. S. National Museum I wish to express to Mr. Coffin and to 

 the Director of the Expedition, hearty thanks for the interesting series of 

 specimens. 



The series of early stages of these mosquitoes collected by Mr. Coffin will 

 be used in the preparation of a monograph of the mosquitoes of North and 

 Central America and the West Indies upon which I am now at work, in 

 collaboration with Mr. D. W. Coquillett and Dr. H. G. Dyar, under a grant 

 from the Carnegie Institution. 



