108 AMERICAN HYMENOPTERA. 



together a little longer than the fifth ; the hind metatarsus is rather 

 thick, with very short hair." 



Dimensions .—h,en^\.h : queen, about 22 mm. ; worker (according to 

 Smith and Handlirsch), 13 mm. to 14 mm.; male (according to 

 Vachal), 17 mm. to 18 mm. 



Habitat. — Chile (Santiago), Argentina (Salta, Lara — 

 4,000 meters altitude, and Mendoza) and Peru. Apparently 

 a highland species. This species seems to have its nearest 

 ally in dolichocephahis. 



Bonibiis (Boinbus) dolichocephalus Handl. 

 ? Bombus diligens Smith, Journ. of Entom., V, 1861, p. 154, n. 5, 9 . 

 Cresson, Proc. Ent. Soc. Phila., II, 1863, p. 110, n. 



43-44, 9 . 

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

 (Catal.). 

 dolichocephalus Ant. Handlirsch, Ann. Naturh. Hofmus. 

 Wien., Ill, 1888, p. 244, 9 S . 

 Dalla Torre, Cat. Hym., X, 1896, p. 518 

 (Catal.). 

 " Cockerell, Cat. Abej. de Mexico, 1899, p. 19 



(Catal.). 



Types. — Handlirsch described dolichocephalus from three 

 queens and two workers, which were all collected by Bilimek 

 at Orizaba, Mexico. These specimens are in the k. k. Hof- 

 museum at Vienna. I here describe the male from two co- 

 types (also from Orizaba, Mexico), one of which is deposited 

 in the collection of the United States National Museum and 

 the other in the collection of the Massachusetts Agricultural 

 College. See notes, following the description of B. brachy- 

 cephalus, concerning Smith's type of B. diligens. 



Pile rather coarse and of medium length. Head elongate. Malar 

 space long. Wings very dark. Head, thorax, anterior part of abdo- 

 men and legs dark and with only dark pile; apical segments of abdomen 

 with ferruginous pile. 



Oueen. //^afl'.— Elongate ; black and with black pile. Labrum as 

 in fervidus queen ; malar space slightly longer than its width at apex, 

 about one-third as long as eye ; clypeus, for most part, rather coarsely 

 and sparsely punctate ; ocelli normal for subgenus Bombus ; flagellum 

 of antenna nearly twice as long as scape ; third antennal segment 

 much longer than fifth, fifth somewhat longer than fourth. 



Thorax. — Clothed with black pile ; center of dorsal disc bare, smooth 

 and shining. 



