122 AMERICAN HYMENOPTERA. 



from the last of these three species only by the different 

 length and texture of its pile. 



Bonibus (Boiiibus) pullatiis new species. 

 ? Bombus violaceus Holmberg, Anal. Soc. Cient. Argent., VIII, 1879, 



p. 156, n. 1, c?. 

 .'' " cayennensis var. violaceus Ant. Handlirsch, Ann. Naturh. 

 Hofmus. Wien., Ill, 1888, p. 241, c^ (pars). 



Type. — Described from a single male from Ecuador, de- 

 posited in the collection of the United States National Mu- 

 seum. 



Face with dark cinereous pile ; body otherwise almost entirely black. 

 Malar space sotnewhat shorter than its width at apex. Third antc7inal 

 segment distinctly shorter than the fourth ; the fifth much longer than 

 the fourth. Wings dark and with distinct violaceous reflections. Gefii- 

 talia with sagitto' tiot reaching quite as far back as the tips of the squamcs ; 

 the volsellce reaching far beyond the heads of the sagittcs ; the sagittce 

 with nearly straight shafts. 



Queen. — Brevivillus may be the queen of this species. 



Worker. — Unknown. 



Male. Head. — Face clothed with very dark cinereous pile (this pile 

 is made up of long dark brown hair and shorter dirty whitish pile or 

 down). Occiput dark. Ventro-lateral portions bearing brown pile. 

 Malar space somewhat shorter than its width at apex, nearly one-fourth 

 as long as eye. Clypeus, for most part, covered up with very dark 

 cinereous pile. Third antennal segment distinctly shorter than fourth, 

 the fifth much longer than the fourth. 



Thorax. — Clothed with entirely dark brown pile; a large area on 

 dorsal disc and all but hind and side margins of scutellum naked, the 

 pile apparently having been rubbed off. 



Abdomen. — Entirely dark. 



Genitalia (figs. 159 and 166). — Much like those of medius (see the 

 comparison of the genitalia of these two species, following the descrip- 

 tion of medius) . Sagittse with nearly straight shafts and with outer 

 margins of heads nearly entire, scarcely serrate at all ; their heads ex- 

 tending posteriorly but little beyond the long inner lobes of the squamae, 

 these lobes reaching mesad far past the rounded projections on the 

 inner sides of the volsellae to nearly even with the outer margins of the 

 heads of the sagittte. Tips of volsellae reaching considerably beyond 

 tips of squamae. 



Wings. — Dark and with distinct violaceous reflections. 



Legs. — Coxae and trochanters with scattering dirty whitish pile, 

 though mostly dark. Femora and tibiae black. Hind tibia> with outer 

 faces convex and hairy throughout ; with no long fringes and no trace 



