JVotes on the Lepidoptera of America. 433 



This species may at once be distinguished from G. faunus, 

 by its smaller size, and the distinct ornamentation of the under 

 surface, which wants all the green scales and spots which 

 characterize its congener, as well as the dusky fulvous apical 

 and terminal shades which occur on both wings beneath in G. 

 faunus. Messrs. C. T. Eobinson and F. G. Sanborn have com- 

 municated the specimens which form the basis of the present 

 description. This species appears a more closely knit form 

 compared with either G. C-argenteum, or G. faunus, when the 

 narrower serrations of the external margins of the wings and 

 its total appearance are taken into consideration. 



Mr. Scudder's remarks, in his " Butterflies of New England," 

 Proc. Essex Institute, April, 1S63, undoubtedly apply to Grapta 

 gracilis, and are as follows : 



" I have taken four specimens of a Grapta at the White 

 Mountains from the valleys to the summit, which may possi- 

 bly belong to this species (i. e. G. C-argenteum, Kirby\ but 

 seem to indicate the presence of a new species ; it is fully as 

 small as, if not smaller, than G. C-argenteum, its upper sur- 

 face is like that of G. faunus, while its under surface is more 

 like G. C-argenteum, but differs from that in having the 

 broad ashy band quite hoary, nearly white, and extending also 

 with equal distinctness across the secondaries ; the discal spot 

 of secondaries is a white |_ with b° tn limbs nearly equal simi- 

 lar and straight." — 1. c. p. 169. 



Family, HESPERIIDAE. 



Hesperia., Fabr. 



Hesperia bimacula, n. s. 



Female. Head, above, and prothorax, covered with dark brassy 

 yellow scales ; the tips of the palpi are stained with the same 

 shade. Thorax and abdomen, above, blackish, clothed with lateral, 

 longer, mixed olivaceous and aeneous hair. Beneath, the palpi 



