146 ENTOMOLOGICAL SOCIETY 



Lateral comb of the 8th segment a patch of 



spines; air tube brown Culex pift'ens. 



Lateral comb a row of bars ; air tube black... Culex melanurus. 

 Anal segment with hair tufts on the ventral line 



up to the base Culex dyari. 



Antennae with the tuft at the middle of the joint. 



Antennae whitish on basal half . Culex restuans. 



Air tube short, three times as long as wide, or less. 

 Lateral comb of the 8th segment a patch of small spines 



three rows deep or more. 

 Anal segment with hair tufts before the barred area. 



Anal segment broadly plated Culex canadensts. 



Anal segment without hair tufts before the 

 barred area. Anal segment narrowly dor- 

 sally plated Culex atropalpus. 



Lateral comb of the 8th segment a few large spines in a single, or 



partly double row. 



Anal segment with tufts before the barred area. 

 Comb of the 8th segment of separate, nearly sim 

 ple spines. 



Pecten of the air-tube composed of spines with 

 three teeth; anal finger-shaped processes 



round-pointed Culex sylvestrts* 



Air-tube spines with one tooth; anal processes 



sharply pointed Aedes fuscus. 



Comb of conspicuously toothed spines, joined on 



a weak basal plate. .Culex jamaicensis^ 



Anal segment without tufts before the barred area. 

 Air-tube twice as long as broad. 



Comb of the 8th segment of nearly simple, 



thorn-shaped teeth Culex sollicitans. 



Air-tubes not over one and a half times as long as 



broad. 

 Comb of the 8th segment of pectinated 



spines in an incompletely double row. ...Culex t(zniot'hynchus.\ 

 Comb of the 8th segment of branched spines 

 from elongated bases in a single trans 

 verse row Stegomyia Jasciata. 



*This is the Culex cantans of my former paper in these proceedings. I 

 had written the name sylvestrts in the manuscript, but, by what now 

 appears to have been an error, it was changed to cantans while in the 

 hands of the publication committee. 



tThis is the Culex confints of my former papers. Mr. Coquillett has 

 improved the identification. 



% Received from New Jersey from Mr. H. H. Brehme and from the Dis 

 trict of Columbia from Mr. J. Kotinsky. 



