19 



s^niopsis of the tivt' Liciiera under which the ]ong--l)oaked, blood-suck- 

 ing species known to occur in Nortii America were divided; {'2) n 

 synoptic consideration of the species of the genus Culex, divided into 

 (a) ta])le of the recognized species, specimens of which occur in the 

 National Museum collection, and (h) an account of th(> vmrecognized 

 species, which are known only from the literature; (3) a synoptic ccn- 

 sideration of the species of the genus Anopheles, divided into {</) 

 recognized forms, and (h) luirecognized forms; (4) a brief description 

 of the only valid known species of the genus Psorophora; (5) a synop- 

 tic table of the three known species of the genus Megarhinus; and (6) 

 a s3nioptic consideration of the two known species of the genus Aedes. 

 Mr. Coquillett's tables are here reprinted with slight changes: 



I. — Gknekic Synopsis. 



The following table contains all the genera of the long-beaked mosquitoes known 

 to occur in North America. The males are readily recognized l)y the antennre being 

 densely covered with long hairs; in tlie females the hairs of the antenntc are short 

 and very sparse: 



1. Palpi in the male at least nearly as long as the proboscis; in the female less than 



one-half as long 2. 



Palpi in Ix >th sexes at least almost as long as the proboscis Anopheles. 



Palpi in ))()th sexes less than one half as long as the proboscis Aedes. 



2. Proboscis straight or nearly so, colors of body l)rown and yellowish 3. 



Proboscis strongly curving downward toward the tip, colors bluish or greenish. 



Megarhinus. 



3. Legs bearing many nearly erect scales Psorophora. 



Legs destitute of such scales Culex. 



II. — Genus Culex. 



(a) RECOGNIZED SPECIES. 



Males. 



I. Front tarsal claws bearing a distinct tooth near the middle of the underside of 

 each 3. 



Front tarsal claws bearing two teeth on the underside of one claw, and one on 

 underside of the other, proboscis destitute of a whitish band near the mid- 

 dle 2. 



Front tarsal claws with one tooth on underside of one of the claws, none on the 

 other, bases of tarsal joints white, proboscis destitute of a whitish band near 



the middle fasciaius Fabr. 



"2. Tarsi distinctly white at bases of the joints exritatis Walk. 



Tarsi not white at leases of the joints comobrinus Desv. 



3. Proboscis destitute of a whitish ring near the middle 4. 



Proboscis with such a ring, ends of tarsal jcnnts white tarsalis Coq. 



4. Bases of tarsal joints not white 5. 



Bases of tarsal joints white stimuhins Walk. 



5. Petiole of submarginal cell less than one-third of the length of that cell. 



pungens Wied. 

 Petiole of submarginal cell at least one-half of the length of that cell. 



impiger Walk. 

 Females. 



. Front tarsal claws bearing a distinct tooth near middle of undersideof each.. 2. 

 Front tarsal claws destitute of teeth 7. 



