172 AMERICAN HYMENOPTERA. 



one tapering to a bluntly pointed apex and with its outer dorsal face 

 somewhat excavated and the inner one broadly rounded at the apex. 

 Sagittae with very long shafts, these shafts being without any notice- 

 able projection on their middle portion and being constricted just in 

 front of the heads ; the heads reaching back nearly to the apices of 

 the volsellse, being considerably foliaceous in form and extending 

 ventrad and mesad from the ends of the shafts, their outer margins 

 being distinctly serrate. Uncus (fig. 192) at most only moderately 

 broad, its apical portion being recurved ventrad and broadly rounded 

 at tip. 



IVings .—Only moderately infuscate, rather light. Transverse me- 

 dian vein of fore wings not coalescing at all at base with base of 

 discoidal and curved somewhat so as to form a slightly obtuse inner 

 angle with both the median and the anal vein. 



Legs.— All black. Outer faces of hind tibiae flattened, though some- 

 what concaved behind, and with very sparse hairs, almost completely 

 naked, the fore fringes moderate and the hind ones long, forming dis- 

 tinct, though weak, corbiculse. Hind metatarsi with outer faces fiat 

 or slightly concaved and moderately and rather evenly hairy ; their 

 hind fringes long and black ; about three and one-half times as long 

 as their greatest width. 



Dimensions. — Length: worker (according to Friese), 13 mm. to 14 

 mm. ; male (according to Friese), 16 mm. to 17 mm. (the specimen 

 before me is between 13 mm. and 14 mm. in length). 



There is a single male before me from Callanga, Peru, 

 which I received from Staudinger. This male differs some- 

 what from the typical form described above, and it may be 

 described as follows : 



Male Color Variant. — Like typical male, but with first dorsal abdomi- 

 nal segment entirely black ; second and fifth segments covered with en- 

 tirely coccineo-ferruginous pile ; sixth segment with mostly coccineo- 

 ferruginous pile, but with some short black hairs in middle and with 

 a scanty admixture of very long whitish hairs throughout ; segment 

 seven clothed with pale ferruginous pile tipped with whitish. 



The typical male is here redescribed from a single speci- 

 men from Peru (Cuzco— 10,400 feet to 13,600 feet altitude), 

 received from H. Friese and labelled " Bombus coccineus'' by 

 him. The worker is also redescribed from a single speci- 

 men determined by Friese and received from him. 



This species appears to have its closest relatives in baeri 

 and butieli. The red pile of the specimen before me is per- 

 haps best described as coppery-ferruginous. 



