TEXAN HYMENOPTERA. 249 



Colletes texana, n. sp. 



9- — Robust, black, shining, head and thorax clothed with a short dense 

 whitish cinereous pubescence, very sparse on clypeus, which is shining and 

 sparsely punctured; thorax strongly, rather coarsely punctured, the pubes- 

 cence on niesothorax and scutelhun more sparse and mixed with black, basal 

 edge of metathorax very coarsely reticulated; tegulse pale piceous ; wings 

 short, hyaline; legs clothed with cinereous pubescence, longer on femora be- 

 hind and dense on posterior legs; abdomen broad, convex, as long as head and 

 thorax, shining, minutely punctured, base and sides of first segment with a 

 white downy pubescence, apical margins of segments 1—5 with a narrow, even 

 fascia of snow-white pubescence; apical segment small, obtusely pointed, 

 clothed with short black pubescence. Length .35 inch. 



One specimen from Comal Co. The abdominal fasciae are very even 

 and conspicuous. 



Colletes consors. 



Colletes consors, Cress. Proc. Bost. Soe. Nat. Hist, xii., p. 168. 

 One S specimen. (Belfrage.) 



Colletes albescens. 



Colletes albescens, Cress. Proc. Bost. Soc. Nat. Hist, xii., p. 168. 

 Three 9 specimens. (Belfrage.) 



Prosopis affinis. 



Prosopis affinis, Smith, Brit. Mus. Cat. i., p. 24. 

 One 9 specimen. (Belfrage.) 



Sphecodes texana, n. sp. 



9- — Black, shining, thinly clothed with a short cinereous pubescence, 

 longer and more dense on cheeks, scutellum, metathorax and pleura; clypeus 

 sparsely punctured, fringed anteriorly with long yellowish hairs, which cover 

 the labrum; mandibles tinged with rufous; scape long and slender, flagellum 

 brown beneath, paler towards apex; thorax very minutely and delicately 

 punctured: basal space of metathorax finely granulated, becoming smooth on 

 posterior edge; tegulse honey-yellow; wings large, clear hyaline, subirides- 

 cent, nervures and stigma honey-yellow; legs slender, tibise and tarsi pale 

 brownish, thickly clothed with pale yellowish hairs; abdomen large, smooth 

 and polished, sides of three basal segments and apical segments entirely 

 clothed with a short cinereous pubescence, bright honey-yellow, three apical 

 segments dusky and sericeous. Length .35 inch. 



% . — Slender, more closely and densely punctured ; apex of clypeus, labrum. 

 and spot on mandibles white; antennae longer, stouter, and scape much shorter 

 than in 9> knees, anterior tibise, base and apex of four posterior tibise and all 

 the tarsi yellowish-white; abdomen more slender than in 9, narrowed 

 towards base, and less dusky at apex. Length .30 inch. 



Four specimens. (Belfrage.) 



Sphecodes dichroa. 



Sphecodes dichroa, Smith, Brit. Mus. Cat. i. p. 3f. 

 One 9 specimen. (Belfrage.) 



TRANS. AMER. ENT. SOC. IV. (32) NOVEMBER, 1872. 



