102 
[July 
what double band of black hairs across the abdomen will distinguish 
it, and the yellow pile iftside of the tarsi in the male and the black in 
the female, are sufficient characters, I think, to justify its being sepa¬ 
rated from the former species/’ 
Arctic America. Unknown to me. Probably a variety of the pre¬ 
ceding species. 
I have before me two male specimens from Methy Portage, Arctic 
America, (Coll. Smith. Inst.) which answer very well to the descrip¬ 
tion above given. They are nearly 6 lines long, and in coloration they 
closely resemble the workers of frigidus^ but differ very much from the 
males of that species. 
28. B. streimus, n. sp. 
Female. Head black, mixed with dark fuscous on the vertex. Tho¬ 
rax anteriorly and laterally yellowish; a broad black band between the 
wings. Scutellum yellowish, somewhat mixed with black. Wings 
fusco-hyaline, darkest along the costa and towards the base. Legs 
black. Abdomen with the three basal segments yellowish; the fourth 
black, and the two apical segments more or less fulvous or yellowish- 
fulvous, mixed with black. Beneath black. Length 10—12 lines. 
Worker. Not seen. 
Male. Colored same as the female, except that the head has a mix¬ 
ture of yellowish below the antennae and on,the vertex; the legs have 
the hairs yellowish, particularly on the posterior pair; the fifth segment 
of the abdomen is nearly all black, and the two apical segments entirely 
fulvous. Length 7 lines. 
Five (4 9 , 1 h ) specimens examined. Youcon Biver, Arctic Ame¬ 
rica, and Hudson’s Bay Territory. Mr. Kennicott. (Coll. Smith. Inst.) 
A very fine species. Two of the female specimens have the two apical 
segments almost entirely black, and therefore this species may, although 
improbably, prove to be a variety of B. Arcticus. 
29. B. Sitkensis. 
Bomhus Sitkensis ISTyl. Notis. ur Sallsk. pro Faun, et Flor. Fenn. Forh. 1. p. 
235. 19. 
“ Hairy, yellow; on the third and fourth segments of the abdomen 
blackish, with the hairs on the head and back of thorax mixed with 
blackish; corbicula either fuscous or inclining to fulvous. In the % , 
