HENRY J. FRANKLIN. 341 



71°. I consider the record " 3 workers, Montreal," given by 

 Bowles, questionable. 



This species is most closely allied to B. tnelanopygus Ny- 

 lander and B. gelidiis Cresson. The latter may possibly be 

 only a subspecies of sylvicola, while the former can be readily 

 separated from it by the difference in the coloration of the 

 pile on the head and on the anterior part of the dorsum of 

 the thorax. Sylvicola can be readily separated from B. ter- 

 narius and B. huntii by its much longer pile. 



I am following Cresson in supposing that the above de- 

 scribed species was the one described by Kirby, though 

 Kirby's description is a rather indefinite one. 



Bomb us (Boinbus) gelidus Cress. 

 Bombus gelidus Cresson, Proc. Acad. Nat. Sci. Phila., 1878, p. 184, 9 . 

 " Cresson, Trans. Amer. Ent. Soc, VII, 1879. p. 23. 



(Catal.). 

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

 ? " " Ashmead, Proc. Wash. Acad. Sci., IV, 1902, p. 127. 



" Viereck, Ent. News, XIV, Feb., 1903, p. 54, 9. 

 ? " " Ashmead, Hym. of Alaska, 1904, p. 133. 



The following description is made from two queens (one 

 of them the type, in the collection of the American Entomo- 

 logical Society), fourteen workers (the cotypes of this caste), 

 and one male from Alaska (labelled B. gelidus in Prof. Cock- 

 erell's handwriting). The type male is in the collection of 

 the American Entomological Society. Two of the cotype 

 workers are deposited in the collection of the Massachusetts 

 Agricultural College and the remainder in the collection of 

 the United States National Museum. 



Pile Ion<r and of tnedium texture. Face of the females tnoslly dark, 

 of the male with a noticeable tuft of yellow pile ; occiput usually with 

 considerable yellow pile Dorsum, of thorax, except a distinct, but some- 

 what indefinite, black interalar band, covered with rather pale yellow 

 pile. Dorsum of abdomefi with the first, fourth and often the fifth seg- 

 ments covered with yellow pile, the second and third segm.ents ferrugin- 

 ous-red and the apical segm,ent dark. Malar space of medium length. 



Queen. Head. — Face with a small tuft of yellow hairs between and 

 below the bases of the antennse, or almost entirely dark ; occiput with 

 a triangular patch of pale yellow pile, with black hairs more or less 



TRANS. AM. ENT. SOC, XXXVIII. 



