56 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.47. 



color; extreme terminal edge deep black; inside of tliis is a broad, 

 marginal, oclireous streak, wliich is bent at the apex and continued 

 along outer fifth of costal edge; the ochreous line is edged interiorly 

 by a thin, bluish silvery Hne, which is in turn broadly edged by black 

 on its inner side; ciha bluish fuscous, with strong metalUc reflections. 

 Hmdwing with apex unusually sharply pointed and prominent; clear, 

 light reddish ochreous with extreme base and a small, ill-defined spot 

 on the middle of termen dark fuscous; ciha dark fuscous, with metal- 

 lic sheen. Abdomen brown, underside transversely banded with sil- 

 very white ; underside of body silvery white. Legs silvery white, with 

 broad, dark brown bars on the outer side. 



Alar expanse.- — 15 mm. 



Habitat. — Trinidad River, Panama, March. 



Ty'pe-S'pecimen.—Q2ii. No. 16757, U.S.N.M. 



Forewing very similar in color and pattern to those of H. contrariana 

 Walker, but the bright ochreous hindwing places the species near to 

 H. Jiuituinalis Cramer (imlsana Walker). 



Genus JONACA Walker. 



Type. — Jonaca compulsana Walker. 



Though Walker's generic descriptions are entirely inadequate for 

 present day requirements and though my generic notes on the type 

 of his genus Jonaca, made several years ago, are unfortunately not full 

 enough for absolute determination, I feel reasonably safe in applying 

 this name to the following species, which has the general habitus of 

 the type of the genus. Below are given the generic characters of the 

 present species, which I believe also apply to the type of the genus, 

 J. compulsana Walker; a cursory examination of the type of this 

 species in the British Museum will easily determine this. Labial 

 palpi curved, ascending, hardly reaching vertex; second joint some- 

 what thickened with appressed scales; terminal joint short, bluntly 

 pointed. Face, head, and thorax smooth. Antennse short, stout, 

 simple. Forewing with costa nearly straight, shghtly deflected 

 from apical third; apex blunt; termen rounded; tornus rounded; 

 dorsum straight; ciha short; 12 veins, all separate; 2 from near 

 end of cell; 3, 4, 5, equidistant, approximate from end of cell; 7 to 

 termen; 11 from the middle of the cell; no secondary cell; Ih furcate 

 at base. Hindwing broader than the foremng, roughly triangular 

 with rounded apex; 8 veins; 3 and 4 connate; 5, 6, and 7 parallel. 

 Posterior tibiae with short tufts of hair above the spurs. Body 

 stout. 



AUied to Bliobonda Walker, which differs in having an internal 

 vein in the cell, vein 11 from near the base and vein 2 from near the 

 middle of the cell. 



