334 ANNALS NEW YORK ACADEMY OF SCIENCES 



somewhat paler than the scape. In the worker media and minor, the mandibles 

 may be tinged with red. 



Female. 



Closely resembling the worker major in sculpture, color and pilosity. The 

 thorax differs from that of the female ichymperi in being opaque and densely 

 shagreened, except the scutellum and metanotum, which are smooth and shin- 

 ing. In some specimens, the mesonotum is subopaque, but not as smooth as in 

 whymperi. 



Male. 



Indistinguishable from the male of whymperi. 



Described from numerous specimens from the following localities : 



California: King's Eiver Canyon (H. Heath) ; Marin County, Fallen- 

 leaf Lake, Giant Forest and Alta Meadow Trail (J. C. Bradley) ; Sierra 

 Nevada (Amer. Mus. iSTat. Hist.) ; Tahoe City (A. Fenyes). 



Washington: Umatilla and Klikitat Valley (Samuel Henshaw) ; Pull- 

 man (C. Y. Piper) ; Olympia and Seattle (T. Kincaid) ; San Juan Island 

 (W. M. Mann) ; Union City (J. C. Bradley). 



Oregon: Corvallis (Amer. Mus. Xat. Hist.). 



Xevada : (Amer. Mus. Nat. Hist.). 



Idaho: (E. W. Doane) ; Moscow (J. M. Aldrich). 



Colorado: Boulder Canyon (T. D. A. Cockerell). 



New Mexico: Upper Euidoso, 8500 ft. (C. H. T. Townsend) ; Har- 

 vey's Eanch, Las Vegas Eange, 9600 ft. (Miss Euth Eaj-nolds) ; same 

 range, 10,000 ft. (E. L. Hewitt) ; James Cajijon, near Cloudcroft (A. G. 

 Euthven). 



Utah: Little Willow Canyon (E. Y. Chamberlin). 



South Dakota: Black Hills (Amer. Mus. of Nat. Hist.). 



British Columbia: Alert Bay (H. I. Smith). 



I would regard California as the type locality of this form, which 

 seems to be rather constant. The specimens from Utah and South Da- 

 kota have palei' and somewhat longer pubescence and therefore form a 

 transition to pennsylv aniens. All of my specimens, however, show that 

 there is little difficulty in separating this form from whymperi. In the 

 northern and western portion of its range, it seems to descend to lower 

 levels than this form, but in the mountains of New Mexico it seems to 

 occur in the same stations. 



I do not believe that this is the form described by Kirby as semi- 

 punrtatus. Kirby's description, which evidently refers to a female speci- 

 men, is quite worthless. That it refers either to whymperi or pennsyl- 

 vanicus seems to be proved by the locality. He says that the specimen 

 was ^^taken on a journey from New York to Cumberland House." Now 



