Wasps and Bees • 29 G 
Ten queens as follows: Four from Collinson point, Alaska, July 10, 1914, 
one of them somewhat undersized (F. Johansen); one from Barter island 
Alaska, June 25, 1914 (D. Jenness); two from Bernard harbour, Northwest 
Territories, August 10, 1915 (F. Johansen); two from Bernard harbour, North- 
west Territories, August 17-18, 1915 (F. Johansen); one from Herschel island, 
Yukon Territory, end of July, 1916 (F. Johansen). 
In unfaded examples of both males and queens the yellow is of a browner 
hue than in the other species of the Kirhyellus group. 
One queen, about 11 mm. long, and five larvae "secured cape Ross, Melville 
island, Northwest Territories, June 21, 1916, byEmiu (Eskimo)" (V. Stefansson). 
The Canadian National Collection contains another queen taken at Melville 
island, July 20, 1909, by F. C. Hennessey. Both the Melville island specimens 
differ from those taken on the mainland in being slightly smaller, length 19-20 
mm., with the yellow pale and dingy, the yellow band on the posterior part of 
the thorax narrower than on the anterior part, and the pleura only faintly 
tinged with yellow. It is possible they represent a distinct variety or even 
species. 
Bombus arcticus is probably the B. hyperboreus of European authors, found 
in Greenland and Arctic Eurasia. 
(Two females of another species of the Kirhyellus group, B. strenuus Cr. 
from the Kutlan Glacier, Yukon Territory (alt. 9,000 feet), taken by H. F. J. 
Lambart and Alf. Pattison in June, 1913, are in the Canadian National 
Collection). 
Pratorum Group. 
Vraiorum Group, Franklin, Trans. Amer. Ent. Soc. XXXVIII, p. 304. 
Species of smaller size than those of the Kirhyellus group. Malar space 
shorter, one-quarter to one-third as long as the eye. Male genitalia very 
different. 
Bombus sylvicola Kirby. 
Bombus sylvicola Kirbv, Fauna BoreaH-Americana, Insecta 1837. 
Bombus sylvicola Franklin, Trans. Amer. Ent. Soc. XXXVIII, p. 338. 
Male. — Hairs on head black, a patch of yellow on the middle of the face 
usually reaching upwards to between the antennae, vertex with a yellow patch, 
ventro-lateral sides of the head more or less yellow, sometimes entirely black 
malar space about one-fourth as long as the eye. Thorax with a wide anterior 
yellow band, a medial and about equally wide black band and a yellow band 
on the scutellum, the anterior median portion of which is more or less covered 
with an extension of the black from the medial band; pleura yellow to base of 
legs. Abdomen,, first segment yellow, second and third red, sometimes more or 
less black in the middle, fourth and fifth yellow with more or less black in the 
middle, sixth and seventh segments black, often more or less yellow at the 
sides; hairs on venter mostly pale. 
The specimens from Nome and Teller are smaller (average length, 11 mm.) 
and have the pile somewhat shorter and less shaggy, and on the average more 
yellow (less black) on the fourth and fifth segments than those from Herschel 
island (average length, 12-75 mm.), and Bernard harbour (average length, 
13-27 mm.). In five of the specimens from Bernard harbour the red extends 
more or less on to the fourth segment. 
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