200 LEPIDOPTERA OF NORTH AMERICA. 



ANCERYX Walker. 



Body rather long and slender. The head large, free and promi- 

 nent ; the front broad, subconical, the vertex pilose or subtufted ; 

 the eyes large and salient ; the tongue as long as the body ; the 

 palpi rather slender, scantily pilose and pressed against the front, 

 with the terminal article exposed. Antennae as long or somewhat 

 longer than the thorax, with a short hook and seta. Thorax well 

 developed anterior to the base of the fore wings, but rounded ante- 

 riorly, usually with a slight double crest on the fore part of the 

 dorsum. Abdomen slender and oblanceolate, at least twice the 

 length of the thorax. Legs long and slender, hind tibijB with 

 moderate spurs. The wings narrow and moderately long ; the 

 length of the anterior less than that of the body, and about three 

 times longer than broad across the inner angle, the tip acuminated, 

 the hind border obliquely rounded, but wavy between the nervules, 

 the inner angle rounded and the inner margin moderately concave. 

 Posterior wings rather acute at the tip, with the hind margin 

 entire. 



Head smooth, thorax scarcely crested. 

 1. A. ello Linn. Figured in Drury I, pi. 27. Cram. IV, pi. 301. 



Head and thorax gray ; the front of thorax and the vertex dis- 

 colored with blackish, without distinct markings, with a black line 

 on sides of thorax extending from the eyes to the base of anterior 

 wings. Abdomen gray, with a dorsal gray band, containing a 

 slender blackish line, and banded with alternate black and gray 

 bands in both sexes. Anterior wings pale grayish, varied with 

 blackish ; with a blackish stripe extending irregularly from the 

 base to the tip, and consisting chiefly of streaks between the ner- 

 vules ; base of the wing blackish, with a patch in costa over disk, 

 and at the origin of subcosto-inferior nervule, and with a row of 

 marginal black spots in the interspaces. Posterior wings rust red, 

 with a broad, blackish brown, terminal band and a cinereous patch 

 at the anterior angle. 



