1886.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 437 



fine diverging liairs ; abdomen exceeding the secondaries in both sexes. 

 Male genitalia figured on plate xiv, tig. 11. The side piece is divided, and 

 the supra anal plate is but slightly narrowed to the tip and there emargi- 

 nate. Primaries with arcuate costa, pointed apices, and obliquely 

 rounded outer margin. Veins 12; 5 from the cross-vein at end of cell 

 nearer to G than to 4, 6 and 7 from one point at the upper end of cell, 

 8 from 7 half way to the apex. Secondaries with two internal veins ; 5 

 from the upper end of the cell, 6 and 7 on a short stalk from the same 

 j)oint. The chief peculiarity of the genus is th^ possession of two 

 internal veins to the secondaries, a characteristic unique in the North 

 American representatives of the family. It shows plainly in habitus 

 and structure a tendency to the other Bombycid families, though fully 

 within the definition of the present family. There is only one species 

 thus far known. 



C. pandora Blake, Proc.Eut.Soc. Ph., ii, 279, pi. vii, 9 (1863); Strk.,Lep., 137,pl.xv, 



f.7, S (1877). 



Blackish gray, powdered with white scales. Primaries with a broad, 

 waved, and dentate black transverse line from base, and another broad, 

 black, lunnlate line about one-third from tip, running parallel to outer 

 margin ; the two lines rather closely approximate on inner margin. An 

 irregularly dentate and somewhat diffuse whitish band from apex to 

 hind angle, inwardly somewhat darker shaded. A small black discal 

 spot. Palpi and tongue aborted ; antennae yellow ; thorax black, vesti- 

 ture with fine white hairs intermixed. Secondaries thinly scaled ; deep 

 ])inkish hair at base and along inner margin, whitish to the dusky outer 

 margin. Within this margin is a narrow, lunnlate black band. A 

 smiill black discal spot. Beneath dull grayish white, the maculation of 

 upper surface faintly reproduced, the costa and disk with long pinkish 

 hair. Abdomen black, with edges of segments and sides clothed with 

 white hair. 



Expands 2.50-3.25 inches. Hab. Colorado, Oregon, New Mexico. 



