A REVISION OF THE DELTOID MOTHS SMITH. 77 



the base of the antenna'. Body unxUnate, .sean^ely lobnst; abdonieu 

 cylindrie, in the femah' pointed, conical, in both sexes reachinj;- to or a 

 little exceeding the hind an<;le ol' the secombiries, Le,i;s stout, lon^, 

 well clothed with scales, middle and hind tibia' with the usual spurs. 

 In the nuile the fore tibiie are somewhat nu)dilied. The member is 

 short, with a distinct epiphysis and a long process equaling the basal 

 joint of the tarsi, tipi)ed with an acute, curved, corneous spine, and 

 covering a groove in the first tarsal Joint in whieli lies a pencil of liue, 

 hair-like scales. The entire leg structure is much heavier tlian is 

 usual in this series, and the vestiture is coarse and loose. Wings 

 large, broad, not frail; i)rinuiries trigonate, the costa a little depressed 

 centrally, apex rectangular, outer margin curved and only moderately 

 oblique, making thti inner margin oidya little shorter than the costa. 



This is a quite strongly marked genus with a distinct resemblance to 

 BomoIocJid in its appearance and habitus, yet with the structural fea- 

 tures which ally it to Heniiiiiia. The long, upcurved palpi, terminating 

 in a Hat, hatchet-shaped tip, are <[uite characteristic. The venation is 

 normal, the accessory cell of the primaries being present. 



There is only a single si)ecies thus far known, and this is of an obscure 

 smok»y-brown on Avhich all the usual markings are faintly visible. 



Hypeiiula cacuminalis, Walker. 



1859. Walker, (at. Brit. Mus., Heterocera, XVI, 'M, lljipiua. 

 1891. Smith, List Lepidoptera, 63, Hupenula. 



biferalis, Walker. 

 1859. Walker, Cat. Brit. Mus., Heterocera, XVI, 237, Herminia. 

 1893. Smith, Bull. U. S. Nat. Mus., 44, 389, pr. syn. 



opacdUs, Grote. 

 1876. Grote, Canadiau Eutoiiioloni.st, VIII, 1'7, Bjipcniihi. 

 1891. Smith, List Lepidoptera, 63, pr. syn. 



Ground color a dull, smoky brown, varying in shade, sonu'times 

 toward blackish, sometimes toward a richer more reddish tint, often with 

 sprinklings of whitish scales. Entire body concolorous. I'rimaries 

 with all the usual markings traceable and often quite distinct though 

 never contrasting. Basal line evident, brown, single-toothed. Trans- 

 verse anterior line single, brown, denticulate, rather evenly outcurved 

 over the cell and somewhat irregularly drawn in below. Sometimes an 

 indefinite yellowish shade follows the brown line, and sometimes it is 

 emphasized by scattering white scales. Subterminal line irregularly 

 dentate and angulate, paler than ground color, usually marked by white 

 scales and often preceded by a darker brown shading. A series of black 

 terminal lunules, sometimes united into a continuous liiie, and often 

 reduced to small dots. There is traceable a very vague, dittuse median 

 shade. Orbicular snmll, rountl, yellow or white, often wanting. Keni- 

 form small, narrow, upright, yellowish, marked by a white dot interiorly 

 and sometimes superiorly as well. 8ecoiularies with a somewhat more 

 yellowish cast, varying in depth, with a discal lunule, a broad median 



