Genus Achalarus 



Mountain region. It probably, however, occurs there also in 

 suitable locations. It is very common in New England. 



(2) Thorybes bathyllus, Smith and Abbot, Plate XLVIII, 

 Fig. 5, $ ; Plate II, Fig. 32, larva; Plate VI, Fig. 24, chrysalis 

 (The Southern Dusky-wing). 



Butterfly. Easily distinguished from the preceding species by 

 the much larger size of the translucent spots on the fore wings. 

 Expanse, 1.40-1.50 inch. 



Early Stages. The habits of the larva are very similar to those 

 of the preceding species, and the caterpillar feeds on herbaceous 

 leguminosae. 



It ranges from the Connecticut Valley, where it is rare, south- 

 ward along the coast and through the Mississippi Valley as far 

 south and west as Texas. 



(3) Thorybes semilia, Skinner, Plate XLVI, Fig. 39, $ (Mrs. 

 Owen's Dusky-wing). 



Butterfly. This little species, which may readily be identified 

 by the figure of the type given in the plate, is as yet quite rare in 

 collections. We know nothing of the early stages. The types 

 were taken at Fort Klamath, in Oregon. Dr. Skinner named it 

 in honor of the estimable wife of Professor Owen of the Univer- 

 sity of Wisconsin, the discoverer of the species. Expanse, 1.20 

 inch. 



(4) Thorybes epigena, Butler, Plate XLVIII, Fig. 13, $ 

 (Butler's Dusky-wing). 



Butterfly. Readily distinguished by its large size, the con- 

 spicuous white fringes of the hind wings on the upper side, and 

 the broad white marginal band of these wings on the under side. 

 Expanse, 2.00 inches. 



Early Stages. Unknown. 



This insect is common in Arizona and Mexico. 



Genus ACHALARUS, Scudder 



Butterfly. The antennae and palpi are as in the preceding 

 genus. The neuration is represented in the cut. The hind wing 

 is slightly lobed at the anal angle; the fore wing may or may not 

 be provided with a costal fold. 



(i) Achalarus lycidas, Smith and Abbot, Plate XLV, Fig. 10, 



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