302 



Brunswick, Me., very abundant rn .h , appearing as early as June 4, 



but more abundanl a week later; it Hies with a vacillating, weak flight, at 

 dusk flying in pine-woods and open blueberry-fields about the blossoms of 

 the wild thorn (Packard); .Montreal, Canada (Lyman); Brookline, Mass., 

 (ShurtlefF); Boston, Mount Auburn, Cambridge, Mass., June 1, in meadow, 

 on bushes (Harris Coll., Bost. Soc. Nat. Hist); Williamstown, Mass., June 

 If) (Scudder); Andover, Mass. (Sanborn); Salem, Mass., June (Packard); 

 Amherst, Mass. (L. W. Goodell); Brooklyn, N. Y. (Graef); Albany, N. Y., 

 May 25 (Lintner) ; London, Canada (Saunders); Waco, Texas. April 22, 

 June 30 (Belfrage, Mus. Peab. Acad. Sc.) ; Colorado (Ridings), and near the 

 South Platte, June 28 (Lieutenant Carpenter) ; St. Martin's Falls, Albany 

 River, Hudson's Bay Territory; Newton Falls, N. Y. (Walker). 



This common and widely-spread species may be distinguished by its 

 white front, which is more triangular than in Eudeilinia herminiata, and by 

 the white wings. It varies in sometimes not being tinged with brown on the 

 under side of the costa, both in examples from Maine and Texas. It is one 

 of the earliest of our Gcometrids. 



Corycia semiclarata Walker. Plate 10, fig. 24. 



Corycia semiclarata Walk. ! ! !, Lep. Het. Br. Mus., xxv, Supplement, part v, 1653, 1866. 

 Bapta viatica Harvey, Bull. 800. Sc. Buffalo, pi. TT, fij;. 6, 1874. 



6 S and 6 9. — Head square in front rather .than triangular as in vesta- 

 liata; antenna' gray; body and tore wings whitish, suffused with gray, with 

 two very broad, parallel, diffuse, dark-brown bands, ihe inner curved regularly 

 outward and the outer sinuous; a submarginal, dark, diffuse band; a mar- 

 ginal row of black dots on both wings; fringe on fore wings dark, whitish at 

 tip and on the inner angle; hind wings white, with a line of five indistinct 

 .dots parallel with the outer edge of the wing. Beneath, white ; the discal 

 dots art; very large, those on the fore wings larger than those on the hind 

 wings, and oval; an extradiscal scalloped line common to both wings, and 

 broad on the costa; on the fore wings, a submarginal line, broad toward the 

 costa ; the marginal line of dots is connected ; fringe dusky on the fore wings, 

 white on the hind wings. Fore legs dusky; hind pair white, dark on the ends 

 of the tarsi. 



Length of body, <J, 0.3(5, 9, 0.39; of fore wing, J, 0.42, 9, 0.45; 

 expanse of wings, 0.90 inch. 



