290 . 



Semiothisa bisignata Packanl. Plate 10, iig. 16. 



Mucana hisigiiala Walk.!!!, List Lep. H.t. 15r. Mus., Suppl. (v), xxxv, 1655, 1866. 

 Macaria galbinmta Zellcr, Verb. Bot. Zocl. Ges. Wicii, xsii, 484, 1^72. 



10 3 and 10 9 . — Anteniiaj of male flattened, serrate, ciliated. Fore wings 

 as flilcate as in S. prceatomata; hind wings very much angulated, more so than 

 in 8. prceatomata, the angle being very marked. Head, antennaj, and palpi 

 bright reddish-ochreous. Body and wings whitisli-ochreous, gray, densely 

 speckled with brown, being much paler than usual. Fore wings crossed by 

 three brown lines, arising from moderately-sized costal spots. The inner line 

 much curved, somewhat angular below the costa, but not enlarged on the 

 costa. Second line arising from a rather large light-l)rown costal spot; it is 

 not curved and is rather diifuse. Outer line tremulous, curved outward between 

 the costa and median vein, darker on costa. A reddish-brown, oblong, broad 

 costo-apical spot nearly touches the line; this spot is continued across the 

 wing by a faint reddish shade, especially marked between the first and second 

 median venules. Below this spot, in the middle of the wing, the marginal 

 brown line, elsewhere interrupted, is continuous and well marked in the apical 

 sinus. No discal dot. Fringe pale and concolorous on both wings. Hind 

 wings with a broad doubled shade about midway between the faint discal dot 

 and the outer edge of the wing (sometimes wanting). Beneath-, whitish, with 

 a decided ochreous tint, speckled thickly with brown. An inner and outer 

 ochreous-brown line common to both wings; the outer line broad on the 

 costa, and on the hind wings accompanied by an outer shade. Discal dots on 

 both wings dark, distinct. Legs ochreous. 



Length of body, i, 0.50, 9, 0.43; of fore wing, c? , 0.60, ?, 0.64; 

 expanse of wings, 1.20 inches. 



Brunswick, Me., common from middle of June till middle of July, in 

 hard-wood forests; White Mountains, N. H., July and August 10 (ShurtleiF 

 and Sanborn); Essex County, Vt., July 28 (Cassino) ; Salem, Mass. (Packard); 

 Salem, Mass., June 8 (Cassino); Brookline, Mass., May 30 and June 26 

 (Shurtleff); Andover, Mass. (Sanborn); Amherst, Mass. (Goodell); Oneida, 

 N. Y. (Hawley); West Farms, N. Y. (Angus); Ithaca, N. Y. (Smith); Albany, 

 N. Y., June 25 (Meske). 



This common northern ibrm differs from the other species by its very 

 angular hind wings, pale whitish-ochreous color, the three wavy Hnes on the 

 fore wings, arising from sliiilif costal enlargements ; Ity the large, oblong, costo- 



