2 



this group of inset'ts is fragmentary and scattered. The list published 



in Bulletin No. 4, new 

 series, of this office, 

 abo\ e referred to 

 (1896), is the most com- 

 plete one which has 

 been published for this 

 country, and it includes 

 a citation of \'erv many 

 actual localities of cap- 

 ture of the different 

 species which give us 

 the first insight into the 

 geographic dis t r i b u- 

 tion of the different 

 forms. Very many in- 

 yestigators, mostl}^ 

 physicians, are calling 

 upon this office for 

 assistance in the d e- 

 termination of mos- 



FiG. 1 .— Anopheles piinctipmnii', female, with male antenna? at right tjUUOes, Ox at 1 C a S C 

 and wing tip showing venation at left— enlarged (original). for SOmC indication of 



the characters by which the different forms may l)e recognized. 



In answer to this -^^ ^,' 



demand the follow- 

 ing tables haye ])een 

 drawn up at the 

 writer's request by 

 Mr. D. W. Coquii- 

 lett. They include 

 all of the mosquitoes 

 which haye been re- 

 corded from North ^ " 

 America, and com- ' 

 prise, (I) a synopsis 

 of the fiye genera 

 into which the long- 

 beaked, blood-suck- 

 ing mosquitoes 

 known to occur in 

 North America are 

 diyided; (II) a syn- 

 optic con side ra- 



, . ,. , . Fig. 2.—Culex t.r.niorliynchus, female, showing the short palpi which 



tion Ol ine species distinguish Culex from Anopheles- toothed front tarsal claw at 

 of the genus AnO- right— enlarged (original). 



pheles, diyided into (a) the recognized forms, specimens of which 



