THE CANADIAN ENTOMOLOGIST. 209 



Underneath as above ; ground colour considerably lighter and bands 

 of primaries not so distinct. 

 Expanse, 37 mm. 



(a). Apafitesis toxle, ab. ophir^ n. ab. 



Similar to A. tooele, but thorax and collar deep black without stripes. 



This species most nearly approaches A. Williamsl, from which it 

 may be distinguished by its larger size and more brilliant colouring of 

 secondaries. The fact that a form with black thorax exists would seem 

 to indicate that it is more than a geographical race of IVilliamsi, and for 

 the present we consider it as a separate species. As in all members of 

 this group considerable variation is present. On the primaries the medial 

 band may be reduced to a mere spot, the costal border wanting, and the 

 W mark may meet the postmedial band on costal margin. The broad 

 black margin of secondaries may also be considerably reduced, leaving 

 the irregular indentations to form a submarginal row of three or four spots. 

 In fact, this form, although not so common among the material before us, 

 is probably the original one, and the irregular broad band is merely formed 

 by the fusion of the submarginal spots among themselves and with a 

 narrow costal border. On those specimens with reduced- border the basal 

 dash is also missing. 



Habitat. — Provo, Ut.; Eureka, Ut, (Spalding.) Described from 

 6 (^ 's (toceie) and 5 c? 's (ab. ophir). 



Types. — Coll. Barnes. 



Euchcetias gigantea, n. sp. ■-. 



9 . — Palpi, front, antennae, thorax, legs and wings brownish-gray, 

 primaries slightly sprinkled with lighter scales on outer fourth, well defined 

 inwardly, giving the appearance of a curved line across wing. Anterior 

 edge of collar edged with scarlet, extending downward to form a patch 

 behind the eyes. This scarlet edging is followed posteriorly by a delicate 

 ochreous line, which, broadening out laterally, extends on the under side 

 as far as the point of insertion of secondaries. Fore coxse, base of wings 

 underneath and abdomen above scarlet, the latter with a series of black 

 dorsal spots and faint traces of lateral markings. Pectus and abdomen 

 underneath light gray, much lighter than wings. Anal tuft yellowish-buff, 

 slightly tinged beneath with orange anteriorly. 



Near base of primaries on under side is a small patch of whitish hairs. 



Expanse, 47 mm. 



