344 AMERICAN HYMENOPTERA. 



Bombus (Boiiibiis) perplexus Cress. 

 Bonibus elatus Harris, Catal. Insect, Mass., 1835, p. 70. (Catal.). 

 " perplexus Cresson, Proc. Ent. Soc. Phila., II, 1863, p. 91, n. 



5, (?. 

 " hudsonicus Cresson, Proc. Ent. Soc. Phila., II, 1863, p. 92, n. 



7, d^. 

 " perplexus Packard, Proc. Essex Instit., IV, 1864, p. 117, 6" . 

 " " Cresson, Trans. Amer. Ent. Soc, VII, 1879, p. 230. 



(Catal.). 

 " " Bowles, Ann. Rep't. Ent. Soc. Ont., 1880, p. 33. 



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



" " var. hudsonicus Cress., Syn. Hym. No. Amer., 1887, 



p. 308. 

 " " Dalla Torre, Cat. Hym., X, 1896, p. 539. 



" " var. hudsonicus Dalla Torre, Cat. Hym., X, 1896, 



p. 539. 

 " " Fletcher and Gibson, Can. Ent. Rec. (Ann. Rep't 



Ent. Soc. Ont.), 1907, p. 17. 



Types. — I have been unable to locate the male and it is 

 possibly lost. The cotype queens are scattered in the follow- 

 ing collections : United States National Museum, American 

 Entomological Society, Museum of Comparative Zoology, 

 Colorado Agricultural College, Leland Stanford Jr. Univer- 

 sity, New Hampshire College, Montana Agricultural Col- 

 lege, Massachusetts Agricultural College, Connecticut Agri- 

 cultural Experiment Station and the private collection of 

 Prof. T. D. A. Cockerell. The cotype workers are deposited 

 in the following collections : Massachusetts Agricultural 

 College, United States National Museum, American Ento- 

 mological Society, New Hampshire College, Museum of 

 Comparative Zoology, Montana Agricultural College and the 

 private collection of Prof. Cockerell. 



Pile rather long and fine. Females with face black, occiput yellow, 

 dorsufH of thorax yellow, lower half of pleura black, the two basal dor- 

 sal segments of the abdom,en yellow and the rest black, venter black, the 

 wings moderately brown, legs black, and malar space moderately long. 

 Males with face, occiput, dorsum and pleura of thorax, and first three 

 dorsal segments of abdotnen yellow ; the rem.aining dorsal segments 

 black. 



Queen. Head. — Face very often with a slight sprinkling of light 

 pile, visible with a lens, but usually entirely black ; occiput usually 

 with a triangular patch of pure light yellow pile, but often with black 



