588 WILLIAM T. M. FORBES 



broad at base. R 3 , R 4 , and RS forking at nearly the same point; M 2 and M 3 free and 

 well separated in both wings. Moths large and Noctuid-like in appearance. 



Caterpillar exactly as in the Phycitinse. 



An aberrant genus, perhaps nearer to the Epipaschiinse and lower Phycids than 

 to the true Pyralina;. 



1. 0. cariosa Lederer. Dull dark red-brown; base paler, and median area usually 

 davker, or even blackish; usually concolorous to the inner margin; bounded by a 

 rather evenly excurved antemedial line, whose upper part is oblique outward, 

 and by a sinuous postmedial. Terminal space practically even, without the streaks 

 and wedges of 0. dentosa. Hind wing darker and more fuscous. 30 mm. 



Larva a borer in fruit of papaw; blackish, with a broad red band on dorsum, and 

 a lateral red band, separated by an equally wide black subdorsal area from the 

 dorsal; red bands mottled with brown; tubercles white. 



District, of Columbia, southern Illinois, and southward. 



2. 0. dentosa Grote. Clay color, dusted and streaked outwardly with dark red- 

 brown; a large, nearly square, dark-brown patch on middle of costa, extending half- 

 way across the wing, shaded with black, and running out into teeth on the veins. 

 Ordinary lines obscure, bordering the patch. Hind wing blackish, redder at margin. 

 35-40 mm. 



June. Caterpillar black, dotted with white; without red bands; on barberry. 

 Southern Connecticut to Ohio, Iowa, and south. 



Subfamily ANCYLOLOMIINJE 



Similar to the Crambinse. Fore wing very frequently notched at the middle, 

 and twisted in the resting position. Hind wing (fig. 367) in female with a simple 

 frenulum; cell closed by a weak but distinct, middle discocellular vein; Mj more or 

 less weakened; widely separate from R at origin. Basal portion of Sc and R also 

 widely separated in some cases. 



This is a primitive type, related to the common stem of the Crambinae and 

 Phycitinse. There are only a few forms in all, the majority in the Old World. 

 The early stages are but little known. 



61. PRIONAPTERTX Stephens 



Front slightly conical, ocelli absent; male antennae serrate; palpi about twice 

 as long as head; tongue well developed. Fore wing with apex rectangular, abruptly 

 offset inward at middle of outer margin, between M, and M 3 , and crumpled at 

 that point in the resting position. Rj becoming coincident with Sc in our species. 

 R, connate or short-stalked with Mj in our species, but completely fused with it in 

 the western P. achatina; M^ and M 3 short stalked. Hind wing with Sc and R 

 moderately anastomosing; the upper discocellular erect, middle discocellular com- 

 plete, but rather weak, and oblique outward, but not strongly angulate, M 2 and 

 M 3 fused in our species. 



1. P. nebulifera Stephens. White, base blackish, costa shaded with fuscous; 

 median area blackish, crossed by the zigzag white median line; subterminal 

 line fine, white, defined on outer side with a fine dark line, and on inner with 

 a blackish shade, with a tooth opposite cell; waved and concave below. Apex 

 white; with a blackish ray running to the tooth of the outer margin, and with 

 a black bar below it. Terminal line fuscous, and fringe pale, except on the tooth. 

 Hind wing pale gray. 25 mm. 



May to August; October. 



The larva lives on the ground and forms a tunnel of sand and silk extending 



