HESPERIOIDEA OF AMERICA 45 



appears that there is no closer bond between alpheus and libya 

 than between libya and catulliis, while ceos varies in the opposite 

 direction from cat nil us but in the structure of the palpi shows 

 some affinity with the first two species. For these reasons I 

 prefer to regard the group as one genus with a wide range of 

 structural variation. In this sense Pholisora may be character- 

 ized as follows: 



Palpi exceeding the front by the length of the head or more ; 

 second joint oblique, rather long, with moderate scaly vestiture ; 

 third porrect, slender, long. Antennae about one-half as long 

 as primaries; club more or less tapered and blunt. Wings 

 rounded; secondaries w T ith or without a slight indention in the 

 outer margin at the end of the cell and sometimes with a slight 

 lobe at the anal angle. Neuration variable ; vein 11 of primaries 

 never much beyond middle of cell and vein 2 about the same 

 distance from base of cell and vein 3 ; U. D. C. long, over half 

 the length of M. D. C. Male with or without costal fold, never 

 with tibial tuft. Fig. 13. 



Key to the species 



1. Primaries with a transverse series of dark dashes alpheus 



Primaries without dark dashes 2 



2. Secondaries with white spots below 3 



Secondaries immaculate 4 



3. Under surface pale, yellowish; upper surface of primaries with trans- 

 verse row of spots complete lena 



Under surface usually less pale and with numerous white spots when 

 upper surface is heavily spotted; possibly not distinct from the pre- 

 ceding lib y a 



4. Head and palpi ochreous ceos 



Head and palpi dark, concolorous with body 5 



5. Upper surface of an even shade 6 



With faint, dark, transverse bands 7 



6. Undersurface brownish black catullus 



Under surface grayish glaucous mejteawus 



7. Primaries with hyaline subapical spots Imyhurstii 



No such spots brennm 



1. PHOLISORA ALPHEUS 



Thanaos alpheus Edw., Trans. Am. Ent. Soc. v, 206, 1876. 

 Pholisora oricus Edw., Can. Ent. xi, 51, 1879. 

 Biol. Cent.-Am., Ehop. n, 442, pi. 90, f. 15, 1897. 

 Holland, Butterfly Book 331, pi. xlv, f. 2, 1898. 



