178 GROTE & ROBINSON. 



Primaries with a longitudinal black streak beneath the median ner- 

 vure, sometimes subabsolete, and touched with black scales above this 

 on subcostal nervure. Superiorly, from the base outwardly, the wing 

 is dusted with light grey. Transverse anterior line, geminate, broken, 

 irregularly dentate, subobsolete. A black, curved, discal streak, be- 

 yond which a diffuse, inwardly oblique, median, dark shade. Transverse 

 posterior line, geminate, regularly iuterspaceally lunate; its course no- 

 where prominently bent. Nervulcs marked with alternate lighter and 

 darker scales. A subterminal intcrspaceal series of short black dashes. 

 A paler somewhat greyish terminal space extending downwards to ex- 

 tremity of third median nervule, widening to apices. Secondaries, 

 pale smoky grey, darker clouded over anal angle. Beneath, the secon- 

 daries are almost white, while the primaries are blackish without mark- 

 ings, shaded with white on costa and diflFusely along internal margin. 



Expanse, % , 1.60 inch. Length of body, 0.70 inch. 



^aftiVa^.— Atlantic District. (R. I. ! N. Y. ! Penna. 1) 



Differs from the female figured and described by Mr. Grote, (1. c.) 

 by the hardly paler terminal space and more distinct ornamentations, 

 in addition to the sexual character afforded by the pectinate antennae. 

 This species is strongly contrasted with the other species of the genus 

 by its blackish cinereous color. Its proper position is with C. bigutta- 

 tus, Pack. The % anal tuft is but slightly bifid. 



HETEROCAMPA, Doubhday. 

 Heterocampa obliqua. Packard. (Plate 4, figs. 26, % , 27, 9 •) 



jrcterocainpa oh/njtia, Pack., ( % ) Synopsis Bonibycidae, IT. S. Proc. Ent. Soc. 

 Pliil., Vol. 3, p. .''.68. (November, 1864.) 



$ . Head, collar, under thoracic surface and legs, clear cinereous, 

 paler than in the ijiale. The prothoracic squamation wants the darker 

 linear shade which characterizes the male. Antennae, simple, dark 

 testaceous. Eyes, smaller than in the male. Fatagia, somewhat glau- 

 cous cinereous, with black borders. (Centrally, the thorax is clear ci- 

 nereous, paler than in the opposite sex. l\)steriorly, a somewhat glau- 

 cous cinereous, triangular jjatch with black borders. Metathoracic 

 tuft, blackish. The general form is stouter than in the male and the 

 wings are broader. 



The primaries resemble the male fore-wings in ornamentation, but 

 the markings are more distinct. 



The general color is dark cinereous. Basal half line geminate ; the 

 outer of the two lines is straighter and black, more distinct than the 

 inner curved line, and rests inferiorly on a narrow, slightly waved and 

 black streak issuing from the base of the wing, and running outwardly 



