449 



oblique, scalloped. Hind wings more or less produced toward the apex; 

 outer edge moderately full, either entirely serrate or toothed only toward the 

 apex ; the wings reach a little beyond the end of the abdomen. Venation : 

 six subcostal venules; a long, narrow, subcostal cell. Coloration: whitisb- 

 asb, with a common, very distinct, black, extradiscal line. 



The species of this genus, so far as regards the females, may be known 

 by the well-scalloped wings and the large head, unusually full and convex in 

 front. Unfortunately, no males have yet been obtained. 



Synopsis of the Species. 



Hind wings serrate on the entire outer margin ; extradiscal line on hind wings bent out- 

 ward S. approximaria. 



Hind wings partly serrate ; extradiscal line nearly straight <S'. permagnaria. 



Stenotrachelys approximaria Gruenee. Plate 11, fig. 30. 



Cymatophora approximaria Hiibn., Exot. Schm., vi, B.-a., 1806. 

 Stenotrachelys approximaria Guen., Pual., i, 290, pi. 2, fig. 6, 1857. 



Walk.!!, List. Lep. Het. Br. Mus., xxi, 458, 1860. 



1 9. — Vertex and front very full. Wings smaller than usual in propor- 

 tion to the rest of the body; fore wings slightly dentate; hind wings acutely 

 and cpiite regularly dentate. Body and wings whitish-gray. Fore wings 

 with two distinct, heavy, black lines, Hie inner very near the base of the wing, 

 regularly curved, a little pointed on the costa. Outer line bent at right 

 angles on the basal third of the first median vein, the line thence going straight 

 to the costa, though zigzag in its course; from the rectangular bend, the line 

 follows a course subparallel to the median line, where it again turns rect- 

 angularly, ending on the middle of the inner edge of the wing. An inner 

 reddish-brown line is parallel and near it below the median vein, and above 

 passes just within the faint discal dot. Beyond this line, the wing is speckled 

 with linear transverse strigse ; no brown shade. A scalloped, marginal, dis- 

 tinct, black line. Hind wings as the anterior pair, thickly dusted, the speckles 

 becoming linear beyond the single median black line, which is distinctly bent 

 outward and scalloped between the bend and trie costa. The marginal scal- 

 loped line distinct. Fringe pale gray. Scallops regular, very equal in size; in 

 this respect the species differs from Hemerophila imitaria, in which they are 

 very unequal, there being one deep-rounded one in the middle of the wing. 

 Beneath, just as above, with the outer line faintly reproduced; no discal spots, 

 and the marginal line faint. Legs and abdomen speckled like the wings. 

 57 p ii 



