March, 1907.] GrINNELL & GrINNELL : CALIFORNIA BUTTERFLIES. 49 



Seven Oaks, 5,100 feet, July 7, i ?; Fish Creek, 6,500 feet, June 

 22-July5, 14 d^c?, 6 ?$; South Fork Santa Ana, 6,200-7,000 feet, 

 June 30 and July 1,10 d'd^, 5 9 ? ; cienega towards head of South Fork, 

 8,500 feet, June 27, i 9 j cienega on south slope of Sugarloaf, 6,700 

 feet, July 22, 1$ ; Bluff Lake, 7,500 feet, July 18-21, 3 c^d^ t ?. 



46. Epargyreus tityrus (Fabricius) Hiibner. 



This showy skipper was common in the Lower Transition zone to 

 which it appeared to be exclusively confined. The largest numbers 

 were obtained around thistles (^Carduus bernardimts') in the black oak 

 belt. Fifteen examples: Fish Creek, 6,500-7,000 feet, June 20-30, 

 2 cfcf, 7 ? ? ; South Fork Santa Ana, 6,200-6,700 feet, July 1-24, 

 3cJ^c?, 3 ??• 



47. Thorybes mexicana (Herrich-Schaeffer) Scudder. 



Four examples: Fish Creek, 7,000 feet, June 30, i c?*, i ? ; 

 South Fork Santa Ana, 6,200 and 7,000 feet, June 27 and July i, 

 I ? ^. 



48. Thanaos funeralis (Scudder & Burgess) Dyar. 



Two examples ; Fish Creek, 6,500 feet, June 23, i 9 ; Bluff Lake, 

 7,500 feet, July 21, i 9. 



49. Thanaos tristis Boisduval. 



This black skipper occurred in relatively small numbers up through 

 Lower Transition. It was taken about bare wet sandy places in the 

 canyons, and on flowers of thistle {^Carduus bernardimcs^. The eight 

 specimens secured agree fairly well with iristis as described in Wright's 

 book, but are somewhat smaller with some differences in the white- 

 spotting of the fore wings. It may be that a new name is needed, but 

 we deem it better to wait for a much-needed revision of this difficult 

 genus. Fish Creek, 7,000 feet, June 30 and July 5, i d^, i 9 ; South 

 Fork, 6,200-6,700 feet, June 30-July 24, 3 cJ^d^, i9 ; Seven Oaks, 

 5,100 feet, July 7, i d^ ; Bluff Lake, 7,500 feet, July 21, i 9- 



50. Pyrgus montivaga (Reakirt) Dyar. 



Noted commonly only in the sage belt, barely into Lower Transi- 

 tion. Its light color blended so closely with the gray tone of the sage 

 {Artetnisia tridentata) as to make it very difficult to discern even in 

 flight. Seven Oaks, 5,100 feet, July 7, i d^ ; Fish Creek, 6,500 feet, 

 June 19, I d^ ; same, 7,000 feet, June 30, i d^. 



51. Hesperia ericetorum (Boisduval) Dyar. 



But one specimen : d^, Fish Creek, 6,500 feet, July 5, 1905. 



