234 HYMENOPTERA. 



Scutellum densely covered with ferruginous tomentum, but meso- 

 thorax much less densely tomentose, except posteriorly. 



nstula Ckll. 



Scutellum not densely covered with tomentum 11, 



11. First abdominal segment, seen from above, a nearly equilateral 

 triangle halictura Ckll 



First abdominal segment very broad, not at all triangular. 



virgata Ckll. 

 CoUetes comberi n. sp.— 9. Length about 8 mm.; anterior 

 wing about 6; black, with white pubescence, neither ochreous nor 

 mixed with dark on thorax above ; malar space about a fourth broader 

 than long, striate basally ; clypeus prominent, shining, with scattered 

 punctures, middle depressed, lower margin distinctly emarginate ; 

 supraclypeal area shining, punctured at sides ; sides of face and cheeks 

 densely covered with long pure white hair ; vertex with extremely fine 

 punctures ; labrum smooth and shining, without a pit in the type speci- 

 men, with a central pit in the other ; scape and base of flagellum black, 

 rest of flagellum broadly light ferruginous beneath, blackish above ; 

 thorax with much white hair ; mesothorax and scutellum shining, with 

 sparse small punctures, disc of scutellum impunctate ; base of meta- 

 thorax with quadrangular areas separated by fine ridges ; truncation 

 with long hair ; tegulse hyaline, tinged with testaceous ; wings clear 

 hyaline, stigma clear ferruginous or amber-color, nervures ferruginous 

 the outer ones rather dusky; second s. m. very large, broader than 

 third, receiving first r. n. a little beyond middle ; legs black, with 

 white hair, tarsi red at apex ; hair on inner side of hind basitarsus 

 white, yellowish at tip ; hind spur apparently simple, the minute denti- 

 culations only visible with a high power of the microscope ; abdomen 

 with extremely fine punctures ; hind margins of segments reddish, but 

 in good specimens covered with short white hair ; first two segments 

 with the base broadly covered with white hair, leaving only a narrow 

 discal band showing the surface ; on the third and fourth segments 

 the basal white hair is not so prominent, and on the fifth it is absent, 

 though the whole segment is thinly pilose ; the apical segment has ap- 

 pressed yellowish-tinted hair; last ventral sparsely punctured. Last 

 joint of maxillary palpi a litte longer than fifth. Measurements of an- 

 tennal joints in microns: (2.) 160, (3.) 176, (4.) 145, (5.) 160, (6.) 

 176. 



Habitat. — Karachi, N. W. India {E. Comber-). British Mu- 

 seum. This does not resemble any described Indian species. 

 It may be compared with C. mixtus Rads., from which it dif- 

 fers by white abdominal bands, not tinged with yellowish, 

 and the light brightly colored stigma. A very similar (un- 

 described) species occurs at Alamosa, Colorado. 



