ENTOMOLOGY OF COLORADO. 311 



alpiue or lower ; contrasting in this respect with the high-alpine of 

 Ecuador, which is so derived. 



THE HIGH- ALPINE COMPARED WITH NORTHERN REGIONS. 



The affinities of the high-alpine not being with the mid-alpine, 

 they could only be with the far North. Alberta being a suitable 

 region for comparison, I wrote to Mr. Thomas E. Bean, asking him 

 to tell me how many of my high-alpine species occurred with him. 

 He most kindly replied, giving me the following interesting infor- 

 mation : 



Of the Coleoptera, he finds at Laggan Dol.opius lateralis, Podab- 

 rus lateralis, Orsodachna atra, Cicindela longilahrU, Adoxus viiis, 

 Chrysobothris trinervia, Coccinella transversoguttata, Trichodes ornatus, 

 Acmoeops pratensis and Mnrdella scntellaris. He adds : " That is a 

 good sprinkling, considering that I derive the facts from a small lot 

 I sent Mr. Fletcher several years ago, presumably the commoner 

 species." 



Of the Rhopalocera, he has taken the following : 



Lycxna ssepiolus, Laggan, 5000 ft. 



Pyrameis cardui, Laggan, 5000 ft. 



Anthocharis ausonides, Laggan, 5000 ft. Rare. 



Vanessa milbertii, Laggan, 5000 ft. Also 7000 to 8000 ft. 



Pier is oleracea, Laggan, 5000 ft. to 6500 ft. 



Papilio rutulus, on the Columbia near Golden, B. C, altitude about 2550 ft. 



Chionobas chryxus. Laggan, 5000 to 7000 ft 



Colias eurytheme, Laggan, 5000 ft. "Occurrence intermittent, as our altitude is 



almost above its limit." 

 Vanessa antiopa, Laggan. "Chiefly 5000 ft., but sometimes find larvae up to 



about 5500 ft." 

 Parnassius smintheus, Laggan, 5000 ft., and again 7000 to 8000 ft. 

 Pieris protodice, once only at Laggan, 5000 ft. 

 Pieris occidentalis, Laggan, .5000 to 8000 ft. 

 Satyrus charon. Laggan, 5000 ft. 



It is to be observed that Mr. Bean does not take our characteristic 

 high-alpine species of Colias — C. scudderii and C- meadli. 

 The timber line at Laggan is at 7000 ft. 



MID-ALPINE COMPARED WITH SUB-ALPINE. 



For information about the sub-alpine zone of Custer County, and 

 the adjacent parts of Pueblo County, see " Entomologist," December, 

 1888, pp. 298-305; and 1889, pp. 113 and 190; 1890, p. 19. In 

 making comparisons with the mid-alpine of Custer County, only this 

 district will be considered, as the sub-alpine of localities not imme- 



TEANS. AM. ENT. 80C. XX. NOVEMBEK, 1893. 



