THE CANADIAN ENTOMOLOGIST. 51 



branch to the costal and one to the dorsal margin. The median divides 

 into two branches at the end of the ceil, both branches going to the dorsal 

 margin ; submedian simple, rather long. 



Posterior wings linear lanceolate ; the costal margin is excised from 

 about the middle to the tip ; the costal vein attains the margin at the 

 excision ; the subcostal is nearly straight and attains the margin at about 

 the apical fourth ; discal cell unclosed ; a disco-central nervule is faintly- 

 indicated through the cell, becoming distinct in the apical half of the 

 wing, when it sends two branches to the dorsal margin and attains the 

 •costal margin just before the apex ; the median vein is coincident with 

 the dorsal margin from the basal third to beyond the middle. 



This genus is nearly allied to Eudarcia, DiacJwrisia, but especially to 

 Hyhroma, Clem., differing, however, from all somewhat both in the trophi 

 and neuration. 



0. hyhromdla. N, sp. 



Palpi brown and silver gray intennixed ; head yellowish white ; 

 antennae grayish fuscous, becoming more silvery towards the tip ; thorax 

 and basal half of the forewings maroon brown, with darker brown scat- 

 tered scales and small spots ; remainder of the wing white, with scattered 

 bro\\Ti scales which upon the costa and in the apical portion of the wing 

 are condensed into loose, rather large, irregular blotches. Alar ex. yi 

 inch. Kentucky. 



PERIMEDE, gen. nov. 



This insect is allied to Sfilbosis, Clem,, Laverna, &c. It was captured 

 in my library, where it had most probably escaped from some of my 

 breeding cages, but I can give no account of its larval history. 



No maxillary palpi ; labial palpi slender, rather sparingly scaled, 

 reaching the vertex, widely divergent ; antennae faintly pectinated, more 

 than half as long as the wings ; basal joint suddenly clavate towards the 

 tip. Head and face smooth, with the scales appressed ; face rather 

 broad. 



Wings long and narrow, with long ciliae. 



Primaries longer than the body, narrowly lanceolate. Discal cell 

 closed, the discal vein giving off one branch to the posterior margin near 

 the tip. The costal is very short. The subcostal sends two branches to 



