1863.] 
103 
the hairs are of a more pure yellow, with three, more or less distinct, 
narrow bands of the abdomen, and the hairs in the middle of the back 
of the thorax mixed with black. 
“Small. 9, 17 millim., anterior wings 14; 10—14, anterior 
wings 9—12; in this the black hairy band of the abdomen is often 
transversely divided by yellow hairs of the margin of the third seg¬ 
ment; % , 12 millim., long, with the wings somewhat longer, hairs nar¬ 
rowly banded on the base of the third abdominal segment, on the fourth 
and fifth almost entirely black; anus fulvous-yellow. Feet black, hairy, 
9^5 yellow hairy in S . Sitka.” 
Not seen. 
30. B. affinis n. sp. 
Female. Head black. Thorax in front and on the sides yellow; 
between the wings black. Scutellum yellow. Wings fusco-hyaline. 
Legs black. Abdomen with the whole of the first and the sides and 
posterior margin of the second segments above yellow; remainder of 
the second segment rufo-fulvous; remaining segments black. Beneath 
black. Length 8 lines. 
Male. Colored same as the female, except a slight admixture of yel¬ 
lowish hairs on the vertex. Length 8 lines. 
Hah. Canada, 9 , Mr. W. Saunders. (Coll. Ent. Soc. Phila.), and 
New York, S . (Coll. E. Norton). 
31. B. melanopyge. 
Bombus melanopyge Kotis. iir Sallsk. pro Faun, et Flor. Fenn. Forli. 1, 
p. 236. 
“ Hairy, yellow, with the hairs on the head and the back of the tho¬ 
rax, between the wings subfasciate, intermixed with blackish; on the 
second, third and base of the fourth segments of the abdomen fulvo- 
rufous, on the following blackish; body beneath yellow hairy. Length 
of the body and anterior wings, 11 millim. Sitka.” 
Not seen. 
32. B. lacustiis, n. sp. 
Female. Head black, mixed with yellowish in front and on the 
vertex. Thorax anteriorly and laterally yellowish, mixed with black¬ 
ish ; between the wings blackish. Scutellum yellowish. Wings sub¬ 
hyaline, apical margins clouded. Legs black ; base of femora yellowish 
