HESPERIOIDEA OF AMERICA 41 



There are fiv)e specimens from Arizona in the Barnes collection under 

 this name. Four I am unable to distinguish from xanthus; the remaining 

 one has the secondaries pale below, as in scriptura. 



5. HESPERIA SCRIPTURA 



Syrichtus scriptura Boisd. Ann. Soc. Ent. France, (2), x, 312, 1852. 

 Holland, Butterfly Book 328, pi. xlvii, f. 12, 1898. 

 Wright, Butt. W. Coast 251, pi. XXXI, 459, 1905. 



Oberthiir, Etudes de Lep. Comp. vi, 339, pi. cxxxvn, p. 1206, 1207, 1912 

 (type f. 1206). 

 New Mexico, California, Colorado, April to June. This species is read- 

 ily distinguished by the color of the under surface, its glossy appearance, 

 and as a rule by the reduction of the maculation of the secondaries. As 

 in the two preceding, the male has the tibial tuft but no costal fold. 



6. HESPERIA SYRICHTUS 



Papilio syrichtus Fab., Syst. Ent. 534, 1775. 



Pyrgus montivagus Keakirt, Proc. Acad. Nat. Sci. Phil. 1866, 334. 



Skinner, Ent. News xvii, 277, pi. xn, 1906. 



Texas and Florida, June and July. 



I hjave seen the type of montivagus in the Strecker collection 

 and it is syrichtus, not tessellata as treated by many writers. I 

 have a long series from Florida in which the under surface of the 

 secondaries has a heavy superficial vestiture of brown scales in 

 both sexes. Male with both costal fold and tibial tuft. 



7. HESPERIA PHI LET AS (Plate I, Fig. 7) 

 Pyrgus philetas Edw., Papilio I, 46, 1881. 

 Arizona and Texas, June to October. 



8. HESPERIA TESSELLATA 



Eesperia tessellata Scud., Syst. Eev. 52, (73), 1872. 



Syricthus communis Grote, Can. Ent. rv, 69, 1872. 



H. montivaga Scud., (not Reakirt) Butt. New Eng. n, 1536, 1889. 



Holland, Butterfly Book 327, pi. xlvii, f. 18, 1898. 



Wright, Butt. W. Coast 250, pi. XXXI, 457, 1905. 



Occurs from coast to coast and from the Gulf to northern Canada, April 

 to October. 



8a. Bace OCCIDENTALS 

 Pyrgus occidentalis Skinner, Ent. News xvn, 96, 1906. 

 Skinner, Ent. News xvn, 277, pi. xn, 1906. 



California, Arizona and Texas. This form is scarcely worthy of a name, 

 but may be regarded as a pale southwestern geographical race. I have not 

 looked for differences in the genitalia. 



