24 WILLIAM G. J>IETZ, M. D. 



GROUP I. 



Larger, more robust species; ground color of fore wings dark pur- 

 ple brown. 



Cilia of antennae under 1 ; pale dorsal portion of forewing speckled with dark 



fuscous anatomella. 



Cilia of antennae 2; pale dorsal portion of forewings immaculate. 



coloradella. 



GROUP II. 



Generally smaller and less robust than those of Group I. Ground 

 color of forewings pale or brownish ochreous: 



Transverse vein of forewings blackish above. 

 With transverse fascia. 



Forewings broader ; fascia angulated externally fuscafaKCiella. 



Forewings elongate; fascia convex externally less ill at el la. 



Without transverse fascia buskerella. 



Transverse vein not blackish above appi'oximatella. 



S. anatomella Grote. — Dyar's List, 568, No. 6474. — Head ochreous, pale 

 fuscous on the sides. Labial palpi dark brown, second joint at base and apex 

 within and terminal at base and apex pale ochreous. Maxillary palpi pale fus- 

 cous, base and tip ochreous ; antennae dark brown, cilia of male very short, under 

 1. Thorax dark brown anteriorly, mixed with ochreous on the disk, posterior 

 part of patagia pale yellow. Abdomen grayish, mixed with fuscous. Forewings 

 elongate, rounded at the apex, deep purple-brown ; four pale, H-shaped spots on 

 the costal margin, two of these are before and two behind the middle, the last 

 one of these incomplete ; terminal part of wing pale, projecting almost squarely 

 into the dark ground color between veins 5 and 7, and irrorated with dark, trans- 

 verse strigte ; a dark spot at end of interspace between veins 5 and 6; dorsal mar- 

 gin pale, the latter dilated at the anal angle, before the middle, and again at the 

 beginning of the dorsal cilia, and transversely strigulate with dark brown ; the 

 projections at the middle and at beginning of cilia contains each a distinct, dark 

 spot. Cilia pale yellow, with dark dividing line about the middle and trans- 

 versed by about seven or eight dark bars, the widest of which is before the apex. 

 Underside of wing fuscous, tinged with purple and showing the pale markings 

 of the upper side, though less distinct along the dorsal margin. Hind wings 

 grayish fuscous, with a feeble, purple lustre. Cilia less than J pale gray in their 

 basal half, whitish apically. Anterior and middle legs dark brown; apex of 

 tibiae and tarsal joints banded with pale yellow; hind legs paler. 



Exp. 25.0-26.0 mm.; 1.0 inch. 



Hab. — Northern Illinois; Texas (Harris County); Utah (Salt 

 Lake City) ; New York. 



Closely resembles the European 8. polypari, but is smaller, the 

 number of geminate costal streaks is less and lacks the pale spot at 

 end of cell. 



