1863.] 
99 
22. B. modestus, n. sp. 
Female. Head black, slightly mixed with pale hairs on the vertex. 
Thorax before the wings yellowish-white; remainder black. Wings 
hyaline, faintly clouded on the apical margins. Legs black; inner 
side of the basal joint of posterior tarsi golden in certain lights. Ab¬ 
domen above with the first, third and fourth (except the posterior mar¬ 
gin) segments black; second yellowish-white; posterior margin of the 
fourth, and the remaining segments white. Beneath black. Length 
7 lines. 
One specimen. Youcon Biver, Arctic America. Mr. R. Kennicott. 
(Coll. Smith. Inst.) 
23. B. terricola. 
Bomhus terricola Kirby, Faun. Bor. Arn. iv, p. 273, PI. 6 f. 4 9 • 
Female. Head black. Thorax with its anterior portion above bright 
yellow, remainder of the thorax black, except a slight admixture of 
yellow on the scutellum. Wings fusco-hyaline. Legs black; hairs of 
the posterior tibiae and the tarsi pale brown. Abdomen with the first, 
fourth and fifth segments above black; second and third bright yellow; 
anus yellowish-white. Beneath black. Length 9J lines. 
Worker. Same as the female, except that the scutellum is altogether 
black, and the smaller size. Length 7 lines. 
Male. Unknown to me. 
Two specimens; Canada West, 9 (Coll. Ent. Soc. Phila.), Hudson’s 
Bay Territory, ^ (Coll. Mr. E. Norton). 
For the beautiful female specimen, the Society is indebted to Mr. 
William Saunders, of London, C.W. 
24. B. Howardii, n. sp. 
Male. Head black, mixed with yellow on the face and vertex. Tho¬ 
rax lemon-yellow above and beneath, with an indistinct blackish band 
between the wings. Wings hyaline, slightly stained with yellowish ; 
nervures brown. Legs black, slightly yellowish on the base of the 
femora beneath; hairs of the tibiae and tarsi pale brown. Abdomen 
with the first, anterior portion of the second, and the fourth segments 
above black; the posterior margin of the second and the whole of the 
third segments above lemon-yellow; the three apical segments very 
