301 



what of the type of Fidonia and Thamnonoma rather than Acidalia; the 



costal vein touches or nearly adjoins the first subcostal venule before it bends 



forward to the costa, or does not bend (E. herminiata) and goes straight to 



near the apex; there is no subcostal areole in C. semiclarata (plate 3, fig 8a); 



the second subcostal venule arises within the origin of the fifth subcostal (C. 



vestaliata, plate 3, fig. 8, and C. semiclarata). Hind legs slender; hind tarsi 



nearly as long as the tibiae, which are not swollen. The species are either 



snow-white or white mottled with dark brown, the wings not crossed by lines. 



This genus may be recognized by the arched costa, (he rectangular apex, 



simple male antennae, conical, untufred abdomen, and the full outer edge of 



the hind wings, with the apex and inner angle well marked. The species 



differ from those of Deilinia in the simple antennae and the want of lines. 



The venation differs somewhat in the two species; the second subcostal 



venule arising close to the origin of the fifth subcostal, while in vestaliata it 



arises midway between it and the first; the posterior discal is very oblique in 



vestaliata, straight in semiclarata; in one C. vestaliata, the fifth subcostal vein 



is entirely wanting!. I doubt whether Walker's Corycia hexaspilata is a 



Corycia at all. 



Synopsis of Species. 



Small, pure white; front entirely white; costa of fore wings beneath, snioky C. vestaliata. 



Discolored with dark brown, and with four discal spots C. semiclarata. 



Corycia vestaliata G-uenee. Plate 10, fig. 23. 



Corycia, vestaliata Guen. !, Phal., ii, 59, 1857. 



Walk., List Lep. Het. Br. Mus., xxiii, 873, 1861. 

 Acidalia junctaria Walk. ! ! ! , Cau. Nat., vi, 39, 1SC1 ; List Lep. Het. Br. Mus., xxvi, 1593, 1861 (fide Giote). 



10 S and 10 ?. — Fore wings distinctly rectangular at tip; outer edge 

 of both wings rather fuller than in the following species; front rather longer 

 and more triangular than in the two succeeding species, and the palpi rather 

 slenderer and not extending so far out as in herminiata, but much as in semi- 

 clarata. Snow-white, with no markings above, but irised; stained with brown 

 along the under side of the costa of fore wings as far as the apex (sometimes 

 ths costa is almost entirely white beneath); fringe long, white; front of head 

 white, palpi yellowish on the outer half; antenna? white above, sometimes 

 brownish, yellowish beneath. Legs: fore and middle pairs whitish externally, 

 the femora and trochantines dusky within and beneath; hind pair white. 



Length of body, <t , 0.38, 9, 0.35; of fore wings, <?, 0.41, 9, 0.42: 

 expanse of wings, 0.85-0.95 inch. 



