LEPIDOPTERA HETEROCERA. 417 



blackish crest on each of the three first segments ; first crest much 

 larger than the others. Fore wings with three transverse ochraoeous 

 blackish-bordered lines, which are composed of lunules ; third post- 

 medial; a submarginal line of blackish ochraceous-bordered dots; 

 a transverse ochraceons discal streak in front of a brown patch ; 

 veins black towards the exterior border. Hind wings brownish, 

 pale cinereous on nearly half the surface from the base. Length 

 of the body 11 lines; of the wings 28 lines. 



a. ? 



Genus HETEROCAMPA, C. L. H. v. 1022. 



Heterocampa subalbicans. 

 subalbicans, Grote, Proc. Ent. Soc. Pkilad. 1863, ii. 336, pi. 8, f. 2. 

 Pennsylvania. 



Heterocampa leptinoides. 

 leptinoides, Grote, Proc. Ent. Soc. Philad. 1864, 323, pi. 1, f. 2. 

 Middle States, North America. 



Heterocampa thyatiroides. 



thyatiroides, Wll. Trans. Ent. Soc. 3rd Ser. i. 79. 



Canada. 



Heterocampa ducens. 



Mas. Ferrugineo-fusca ; antennae late pectinatce, apices versus 

 simplices ; abdomen cervinum, alas posticas longe superans, 

 fascicula apicali furcato ; pedes densissime pilosi ; ales antica 

 rufescentes, cinereo conspersa?, litura discali cinerea transversa 

 stibelliptica, guttis submarginalibus et marginalibus fuscis, 

 strigulis intermediis maculaque apicali elongata albidis ; 

 posticce albidce, fusco submaryinatce. 



Male. Ferruginous-brown. Antennae broadly pectinated to 

 much beyond half the length, smooth from thence to the tips. 

 Pectus and legs most densely pilose ; the former fawn-colour. Ab- 

 domen fawn-colour, extending much beyond the hind wings; apical 

 tuft forked, subquadrate. Fore wings slightly rounded at the tips, 

 mostly reddish with some clusters of cinereous speckles, mostly 

 cinereous along the costa ; a transverse cinereous somewhat elliptical 

 discal mark; two rows of dark brown dots, which are elongated and 

 submarginal in the first row, marginal in the second ; an inter- 

 mediate row of small whitish streaks, and an elongated whitish 



