CTENUCHA. 285 



with the posterior remote from the other branches, which are 

 aggregated. 



Head moderate, free, neck distinct, slightly hairy above ; with 

 ocelli. Face smooth, rather narrow. Eyes moderately large, pro- 

 minent. Antennas about one-half as long as the body, .deeply pec- 

 tinated in the J\ slightly pectinated in the 9. Palpi porrect. 

 exceeding the front somewhat, squamose ; basal joint slightly 

 hairy ; the basal and middle joint nearly equal ; the terminal 



shorter, acuminated. Tongue as long or nearly as long as the 

 thorax beneath. 



Body cylindrical, slender, more or less metallic. Patagia scale- 

 like. Hind wings equal to the body in length. Abdomen with a 

 lateral tubercle on the basal segment. Legs rather slender ; fore 

 tibiae with a short tibial spur ; hind tibiae with four moderately 

 long spurs. 



Table of Species. 



Head above orange-yellow. 



Fore wings with costa luteous. 



Cilia white ; wings broad. latreillana. 



Cilia blackish ; wings narrow. fulvicollis. 



Head red or crimson. 



Fore wings with four yellowish white stripes. venosa. 



Fore wings with a white costal and discal stripe. ruficeps. 



Fore wings without stripes. 



Wings blackish ; fringes white. rubriceps. 



Wings broad; palpi porrect; post-apical nervule interior to 

 apical nervulet. 



1. C. latreillana Kirby. Fauna Bor. Am. IV. 305, 1. 



Dark brown or blackish-brown. Palpi pale orange, tips black- 

 ish. Face dark blue. Head above, prothorax beneath and the 

 tegulae in front pale orange. Thorax and abdomen dark metallic 

 blue. Wings with whitish cilia, except in the middle. The fore 

 wings in the 9 have the extreme costa luteous. 



United States, Canada. 



Clemens. 



