429 



with a blackish band in front of, and another between, the antennae. Palpi 

 black on the sides, whitish below and at tips. Thorax with a dusky shade 

 on hind edge of prothorax, and a transverse dusky band behind the middle. 

 Fore wings with three curved, dentate, black lines, marked by distinct black 

 points on the veins. The inner line regularly curved, well marked on the 

 costa, bent outward a little just below this spot, enlarging into a round black 

 spot on the median vein. Middle line faint, brown, somewhat diffuse (often 

 obsolete), and much less curved than the inner line, with a distinct costal 

 patch ; third and outer line sinuate, not much curved, with a series of black 

 dots produced along the veins into teeth; a double tooth on the origin of the 

 first median vein. This line is accompanied by a broad, faint, pale, brown 

 shade. A submarginal row of diffuse, large, dusky spots, best marked toward 

 the apex, and these spots filling the teeth in the submarginal zigzag white 

 line; two dark scallops conspicuous in the extradiscal interspace. Marginal 

 row of black lunules, sometimes forming rounded dots. Fringe whitish on 

 both wings. Hind wings with three wavy lines, the inner just within the 

 discal dot (no discal dot on fore wings) and broader than the others, while the 

 middle line is more distinctly dentate than on the fore wings. Wing beyond 

 marked as on the anterior pair. Abdomen with a double row of dorsal black 

 spots. Beneath, either uniformly pale ash, and without any markings, except 

 very faint discal dots and an outer line, or quite uniformly mottled with dusky 

 ash, and with two lines faintly reproduced. Fore legs dusky, ringed with 

 whitish ; hind legs pale ash ; hind tibiae as usual in the other species. 



Length of body, <f , 0.50-0.60, 9, 0.G0; of lore wing, <?, 0.65-0.72, ?, 

 0.75; expanse of wings, 1.50-1.60 inches. 



Salem, Mass., July 13 (Emerton and Packard); Cambridge, July 7, 

 Brookline, October 4 (Shurtleff); Boston (Minot) ; Dorchester, Mass. (San- 

 born); West Farms, N. Y. (Angus); Brewster's, N. Y., April 21 (Grote); 

 Albany, N. Y., May 4 (Lintner); Illinois (Dr. Hoy); Philadelphia, Pa. (Ent. 

 Soc. and Grote). 



It varies in the distinctness of the lines, the second line on the fore 

 wings is often wanting, and sometimes the lines are quite heavy. The 

 specks, usually light, are sometimes abundant, making the wings darker than 

 usual. The species does not differ in any particular from C. crepuscularia 

 from Europe. In comparing a Vienna male with fourteen others, from 

 different parts of the United States, 1 do not find so much difference as 



