206 POMONA COLLEGE JOURNAL OF ENTOMOLOGY 



This species is very conspicuous, being large, with colored pubescence 

 and wings of the same shade. The peculiar sculpture of the face, and the 

 white abdominal fasciae easily distinguish it. On all the specimens I have 

 the hair of head and thorax is all colored, that of fasciae on abdomen being the 

 only white on the body. 



Described from four females. 



Type locality — Guadalajara, Mexico. 



Colletes bombiforniis n. sp. 



Fkm.ale — Measurements: Length 13 mm.; thorax, 4],^ mm. long by 434 

 mm. broad; abdomen, 6]/^ mm. long by 5 mm. broad; wing, 10^^ mm. long; 

 head, 3^4 m™- long by 3^ mm. broad. Entirely black, except pubescence of 

 face, very robust ; thorax as broad as long ; abdomen truncate or slightly con- 

 vex at l)ase. 



Head — Broader than long; eyes nearly parallel; inner margins concave. 

 Clypeus shining, very convex, covered with sparse brown and white hairs, 

 deeply punctured, the punctures forming striae that curve in toward a narrow, 

 rather deep groove down the center, apex subemarginate. Supra-clypeal area 

 with large well separated punctures. Mandibles large, dark, blunt. Malar 

 space narrow, being one-eighth to one-sixth as long as broad. Face covered 

 with rather sparse, plumose, light brownish to gray hair, with some black on 

 sides, and vertex ; entire surface, including vertex, rather densely punctured 

 with various sized punctures, all smaller than those on supra-clypeal area. 

 Antennae black ; scape long, shining, slightly punctured near end, with short, 

 black hair on inner siile ; flagellum rather stout ; joint three one and one-half 

 times four ; four equal five ; all except four longer than broad. Under surface 

 of head with sparse brown and black hairs mixed. 



Thorax — Deep black, shining; all hair lilack, plumose, rather long, much 

 longer on sides, metathorax and scutellum. Mesothorax with rather large, 

 round, well separated but not sparse punctures, farther apart on disk. Scutel- 

 lum with much larger punctures, very close together except on narrow strip 

 along anterior margin. Post-scutellum rugulose. Superior face of meta- 

 thorax shining with rectangular pits of various widths, all minutely covered 

 with faint wavy lines. Posterior face with enclosure funnel shape ; the top 

 with pits similar to those of the superior face, those in middle much wider 

 than long, those on sides longer than wide, the whole forming a sort of an 

 arch occu])ying most of the bowl of the enclosure; neck of enclosure narrow; 

 lateral faces rugose. Mesopleura with large round punctures and a somewhat 

 brownish tinge to the black hair in places. Wings darkened; stigma small; it 

 and ncrvures black; first submarginal cell of uniform width throughout, long 

 as second and third comliincd. Tegulae shining l)lack, smooth except for a 

 few small ])unctures, with a fringe of light hair on outer edges. 



.Midomen — Very stout, black, shining, no fasciae ; a few long l)lack hairs 

 on base and sides of first segment ; sparse short black hairs on other seg- 

 ments, becoming long and s])ine-like on apical segments. Punctures very few 

 .and small on first segment, and confined largely to apical margin, more Init 



