328 AMERICAN HYMENOPTERA. 



treme western Nevada. It appears to be confined mainly to 

 California, the western portion of Oregon and the south- 

 western portion of Washington. It probably is not found 

 either north or east of these states or in eastern Nevada 

 or Arizona, but is probably present in the northern part of 

 Lower California (my most southern record is San Diego, 

 California). It reaches its maximum abundance in Cali- 

 fornia, where it appears, at least in some portions of the 

 state, to be the most common species. It seems to belong 

 mainly to the Pacific coast portion of the Transition Zone, 

 not crossing the Sierra Nevada Range to any great extent. 

 This species appears to have its closest allies in B. fer- 

 naldi Franklin and B. huntii Greene, from both of which it 

 is easily separated by its strikingly different coloration. 



Boiiibus (Bombus) edwardsii Cress. 



? Bombus ternariusCvesson,Y'voc. Davenp. Acad. Nat. Sci., I, 1876, p 

 210; also Putnam on p. 189. 

 " edwardsii Cresson, Proc. Ac. Nat. Sci. Phila., 1878, p. 184 



8 and cf (not the 9 ). 

 " bifarius Cresson, Proc. Ac. Nat. Sci. Phila., 1878, p. 185 



9 S. 

 " vancouveretisis Cresson, Proc. Ac. Nat. Sci. Phila., 1878, p 



187, c? (pars.). 

 " " Cresson, Trans. Amer. Ent. Soc.VII, p. 231 



1879. (Catal.). 

 " bifarius Cresson, Trans. Amer. Ent. Soc, VII, p. 231, 1879 



(Catal.). 

 " edwardsii Cresson, Trans. Amer. Ent. Soc, VII, p. 231 



1879 (pars.). (Catal.). 

 " bifarius Cresson, Syn. Hym. No. Amer., 1887, p. 307. 

 " edwardsii Cresson, Syn. Hym. No. Amer., 1887, p. 308 (pars.). 

 " vancouverensis Cresson, Syn. Hym. No. Amer., 1887, p. 308. 

 " ternarius var. lacustris Ant. Handlirsch, Ann. naturh. Hof- 



mus. Wien., Ill, 1888, p. 230. 

 " nearcticus A.nt. Handlirsch, Ann. naturh. Hofmus. Wien., Ill, 



1888, p. 243 9 S &. 

 " edwardsii Dalla Torre, Cat. Hym., X, 1896, p. 518 (pars.). 

 " nearcticus Dalla Torre, Cat. Hym., X, 1896, p. 538. 

 " ternarius var. lacustris (Ant. Handlirsch) Dalla Torre, Cat. 



Hym., X, 1896, p. 553. 

 " vancouverensis Dalla Torre, Cat. Hym., X, 1896, p. 560. 



