170 AMERICAN HYMENOPTERA. 



a mixture of rather long dark brown or black hairs and much 

 shorter and finer and much more branched white or whitish 

 pubescence or down. The ferruginous pile is perhaps better 

 described as golden-russet in color. This species is ex- 

 tremely transitional in its Bombias characters, as those char- 

 acters were originally described, but the venation of the 

 fore wings appears to establish its position in this subgenus. 

 The venation of the hind wings is, however, as in the sub- 

 genus Bombtis. 



One of the specimens before me (from Huancabamba, 

 Peru) has the third dorsal abdominal segment clothed en- 

 tirely with ferruginous pile and should therefore be con- 

 sidered a color variant. 



Bonibus (Bombias) coccineus Friese. 

 Bombus coccineus H. Friese, Zeitsch. f. System. Hym. und Dipt., 

 Jahrg. Ill, Heft 4, July 1, 1903, p. 254, S c?. 



Types. — Friese described this species from three workers 

 and five males, all from Marcapata, Peru. These specimens 

 are in his private collection. 



Malar space medium. Pile of medijim length and rather fine. Head 

 and thorax black. Dorsum of abdomen with first segment black, mid- 

 dle segments red and apical segme^its white or whitish haired. Venter 

 mostly dark. Legs black. JVings rather light. 



Queen. — Unknown. 



Worker. Head. — Pile entirely dark brown or black. Malar space 

 but little shorter than its width at apex, nearly one-fourth as long as 

 eye. Clypeus moderately punctate. Ocelli placed distinctly above 

 narrowest part of vertex and but little below supra-orbital line, the 

 lateral ones being placed about as far from each other as from the eye 

 margins. Third antennal segment longer than fourth. 



Thorax.— V\\& all black. An area on middle of dorsum of thorax 

 and a smaller one on front part of scutellum naked of pile. 



Abdomen. — Dorsum : segment one with entirely black pile ; segment 

 two with a median patch of black pile extending longitudinally clear 

 across it, but otherwise clothed with coccineo-ferruginous pile ; seg- 

 ments three and four clothed with entirely coccineo-ferruginous pile ; 

 segment five mostly white, but with some black hairs ; segment six 

 mostly black, but with some white hair on extreme sides. Venter with 

 mostly dark brown or black pile, but with some whitish hairs on last 

 segment. 



Wings. — Light, but somewhat smoky. 



