248 NOCTURNAL LEPIDOPTERA FOUND IN CANADA. 



squarely or hooked at the tips. The abdomen has a broad crest at 

 the base, and fine linear ones on most of the following segments. It 

 is divided uito eight genera, of which four are represenled in Canada 

 and the United States. They may be thus distinguished : — 



A. Thorax round or nearly so. 



B. "Wings black. 1. Anthracia, Hubn. 

 BB. Wings not black. 2. Phseocyma, Hubn. 



AA. Thorax square. 



C. Subterminal line on the anterior wings forming two area. 



3. Homoptera, Boisd. 

 CC. Subterminal line nearly straight. 4. Ypsia, Guen. 



Gen. 1. Anthracia.- — Hiibn. 



Antennae, more than half the length of the body ; crenulate in the 

 male. Palpi ascending, thick, curved ; third joint rather less than 

 half the length of the second. Thorax moderately robust, convex, 

 rather rounded ; iegulse slightly projecting. Abdomen conical, pointed 

 posteriorly ; in the male with two small linear crests on the third 

 and fourth segments. Wings entire, of uniform colour, glossy, with 

 lonaj fringes. 



The members of this genus may be distinguished at once from all 

 the others by their deep glossy black wings, like ravens' plumes, and 

 their tegulse, which, though very hairy, do not expand so much as 

 usual at the tips. 



Larva with sixteen equal feet ; smooth, cylindrical, very much 

 attenuated posteriorly, without protuberances ; head thick, lenticu- 

 lar. Lives on trees. 



Pupa obtuse anteriorly, very acute posteriorly, without eflflores- 

 cence ; subterraneous. 



1. A Squamulauis, Drury. — Walk. C. B, M., Noct. xiii. 1075. 

 Coracias, Gu6n. Noct. iii. 19. 



Wings glossy coal-black, tinged here and there with dun-coloured 

 brown ; anterior with several parallel and undulating dull black lines, 

 the last one usually most distinct, and sometimes relieved by some 

 whitish scales. Keniform spot indistinct, but followed by a group of 

 yellowish-white scales. A terminal series of small black points with 

 whitish tips. 



Posterior wings with a brownish streak between the sub-median and 



