338 AMERICAN HYMENOPTERA. 



been able to prove that this is so as I have not seen Radosz- 

 kowski's paper. What are the northern limits of its range 

 in North America. 



The genitalia of the male of this species are very much 

 like those of fernaldi, flavifrons, centralis and bhnaculatus. 

 The closest ally of melanopygtis is the European species lap- 

 ponicus Fabricius, female and male specimens of which, 

 labelled by Schmiedeknecht, I have examined. Lapponicus 

 can be readily separated from 7nelanopygus by the black 

 pleura and distinct and well defined black interalar band of 

 its females and by the ferruginous apical abdominal seg- 

 ments of its males. Is vielanopygus merely a geographical 

 subspecies of lapponims ? Other very close allies of melano- 

 pygus are sylvicola Kirby and gelidus Cresson. 



Bombus (Bombus) sylvicola Kirby. 

 Bombus sylvicola W. Kirby, Faun. Bor.-Amer., IV, 1837, p. 272, n. 



377. 

 ? " ornatus Smith, Catal. Hym. Brit. Mus., II, 1854, p. 398, n. 



52, 9 8 6^ (pars.). 

 ? " " Cresson, Proc. Ent. Soc. Phila., II, 1863, p. 104, n. 



33, 9 a cf (pars.). 

 " sylvicola Cresson, Proc. Ent. Soc. Phila., II, 1863, p. 106, n. 



37, 9. 

 " " Bethune, (Reprint, W. Kirby's Faun. Bor.-Amer.), 



Can. Ent., X, 1878, p. 117. 

 " " Cresson, Trans. Amer. Ent. Soc, VII, 1879, p. 231. 



(Catal.). 

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

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

 " Dalla Torre, Cat. Hym., X, 1896, p. 548. 

 " Ashmead, Proc. Wash. Ac. Sci., Vol. IV, May, 1902, 



p. 127. 

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

 " " H. Friese, Ann. du Mus. Zool. de I'Acad. Imp. des 



Sci. de St. Petersb., 1904, Tome IX, n. 4. 

 ? " ornatus Cockerell, Can. Ent., XXXVIII, 1906, p. 160. 



sylvicola Cockerell, Univ. Color. Studies, IV, 1907, p. 257. 

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



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



Type. — Probably in the collection of the British Museum, 

 but seems to have lost its identity as Col. Bingham was un- 

 able to locate it definitely. 



