46 IOWA STUDIES IN NATURAL HISTORY 



Wright, Butt. W. Coast 235, pi. xxx, f. 407, 1905. 

 Arizona, New Mexico, and Colorado, March to July. 



2. PHOLISORA LIBYA 



Eeteropterus libya Scud., Bull. Geol. Surv. Terr., iv, 258, 1878. 

 Holland, Butterfly Book 331, pi. xlviii, f. 14, 1898. 

 Wright, Butt. W. Coast 234, pi. xxx, f. 406, 1905. 



California, June and October. Utah, July. Arizona, April. 



3. PHOLISORA LENA 



Ancyloxypha lena Edw., Can. Ent. xrv, 5, 1882. 



There is one specimen in the Barnes collection which appears to be lena 

 and is possibly a good species. It is rather pale in color, but this may be 

 due to fading. On the upper surface it resembles a heavily maculate speci- 

 men of libya while below it has only a few spots. Libya, when heavily 

 spotted above, is also well marked below. The one specimen is from Miles 

 City, Montana, the type locality. 



4. PHOLISORA CATULLUS 



Hesperia catullus Fab., Ent. Syst. hi, (i), 348, 1793. 

 Scud., Butt. New Eng. n, 1519, 1889. 

 Holland, Butterfly Book, 330, pi. xlv, f. 4, 1898. 

 Wright, Butt. W. Coast 234, pi. xxx, f. 403, 1905. 



United States and Southern Canada, April to October. 



5. PHOLISORA MEJICANUS 



Nisoniades mejicanus Reakirt, Proc. Acad. Nat. Sci. Phil. 334, 1866. 

 Biol. Cent. -Am., Ehop. n, 441, pi. 90, ff. 11, 12, 1897. 



Las Vegas, N. M. 



The upper surface is practically the same as catullus but the glaucous 

 gray appearance of the lower surface is unmistakable. 



6. PHOLISORA CEOS 



Pholisora ceos Edwards, Papilio n, 140, 1882. 

 Biol. Cent.-Am., Rhop. n, 432, pi. 89, ff. 7, 8, 1896. 

 Arizona, July. 



7. PHOLISORA HAYHURSTII 



Hesperia hayhurstii Edw., Trans. Am. Ent. Soc. in, 22, 1870. 

 Scudder, Butt. New Eng. in, p. 1857, 1889. 

 Biol. Cent.-Am., Rhop. II, 433, pi. 89, f. 16, gen., 1896. 

 Holland, Butterfly Book, 331, pi. xlviii, f. 16, 1898. 



Florida, north and west to Minnesota and Texas, March to October. 

 Some specimens have merely a trace of the subapical spots. 



