iyo ENTOMOLOGICAL NEWS. [June, '02 



spots on posterior femora, tibiae and first joint of tarsi anteriorly, 

 bands on dorsal abdominal segments i 6, interrupted in middle 

 on 1-5, notched anteriorly on each side are all yellow; last seg- 

 ment with two large yellow spots, first segment notched sub- 

 laterally behind, sixth segment with a spine on each side, last 

 segment deeply notched with a blunt black tooth in the center. 

 Length 1 1 mm . 



Described from two males, June 16, on Astralagus sp., at Fort 

 Collins, Colorado. Differs from atrifrons Say by the yellow 

 markings, scape entirely black and different shape of last ab- 

 dominal segment. 



Protanthidium cockerelli n. sp. 



$ . Large, broad, robust ; in general appearance resembles 

 some Anthophora ; clypeus, face on each side narrowly con- 

 tinued above the base of the clypeus, mandibles, except tips, 

 white : a line behind upper part of eye, two spots on scutellum 

 posteriorly, ends of four anterior tibiae on the outside, outer 

 edge of posterior tibiae, line on inside of anterior femora, first 

 joint of tarsi, segments 1-6 of abdomen, dorsally with continu- 

 ous bands slightly notched anteriorly in center of five and six, 

 band broad on sixth segment, last segment with a small spot at 

 tip; all dark yellow ; rather coarsely and deeply punctured; 

 pubescence dull ochraceous, sparse; scutellum slightly produced 

 behind and somewhat bilobed ; last dorsal segment of abdomen 

 truncate, excepting a short obtuse tooth in the middle ; labial 

 palpi with second joint scarcely longer than first; maxillary palpi 

 distinctly three-jointed ; venation as in Anthidium s. str. Length 

 16 mm. 



Described from two males ; Rocky Ford, August 10, 1897 

 (Gillette); and Virginia Dale, Colo., (alt. 8000 ft.), Sept. 3, 

 1899 (Titus), on Rudbeckia hirta L- The types are in the 

 Colo. Agr. College Museum at Fort Collins, Colo. 



This species is somewhat related to occidentalis as determined 

 by Prof. Cockerell ; differs in color of pubescence and mark- 

 ings, and in position of markings on abdomen, is also broader 

 and larger generally. The peculiar bilobate scutellum distin- 

 guishes this from any species I have seen. Though Prothan- 

 thidium Ckll. has for its type a bee from India, P. stcloidcs 



