TEXAN HYMENOPTERA. 181 



elongate, narrower than usual, minutely and longitudinally sculptured, serice- 

 ous, a broad honey-yellow baud occupying the basal third, apex rounded. 

 Length .19 inch. 



Two specimens. (Bclf'rage.) 



Choloniis miiiiniiis, n. sp. 



'' 9- — Black, opaque, finely sculptured, subsericeous; tips of mandibles and 



palpi reddish; clypeus shining; metathorax with two central carinte enclosing 

 a shining space, apex truncate, lateral angles not prominent; tegulte piceous ; 

 wings hyaline, dusky at tips; legs black, tibiae and tarsi pale testaceous; ab- 

 domen entirely black, densely and minutely sculptured, longitudinally so at 

 base, apex rounded. Lcngtli .10 inch. 

 Two specimens. (Eelfrage.) 



Plianerotoma tibiali«<>. 



-< Sigalphua (Triaspis) tibialis, Hald. Proc. Acad. Nat. Sci. Phil, iv., p. 203. 



One S specimen. (IJelfrage.) 



-/ Mierodus thoraeicus, n. sp. 



'^ 9. — Large, robust; head broad, black, clothed with a short yellowish 

 sericeous pubescence, cheeks prominent, shining; face broad, roughened, de- 

 pressed on each side of middle ; clypeus broad, sparsely punctured, anterior 

 margin and small space on disk polished; labrum yellow; middle of mandi- 

 bles reddish ; palpi pale yellow; antennse not quite as long as head and thorax, 

 honey-yellow, tips black; prothorax except lateral black margin, mesothorax 

 entirely, scutellum except large black spot on summit, scutellar region, and 

 tegulas, dull honey-yellow or ferruginous; mesothoracic lines deeply im- 

 pressed; pleura black, polished; metathorax rough, opaque black, clothed 

 with a rather dense yellowish pubescence; wings yellow, the apex beyond 

 radial and cubital cells fuscous, neryures and stigma yellow, areolet minute, 

 triangular; legs robust, yellow, more or less tinged with honey-yellow, coxae, 

 base of trochanters, anterior femora behind, intermediate pair except tips, and 

 posterior pair except extreme tips, black ; posterior tibiae honey-yellow at tips ; 

 abdomen short, shining, pale yellow; apical half of first segment and apical 

 margin of second and third segments, sometimes interrupted centrally, black; 

 apical segments more or less ferruginous; second segment with a deep trans- 

 versely impressed line before apex and another, less deep, near base; ovijx'si- 

 tor of 9 nearly as long as abdomen. Length .35 — .40 inch. 

 Seven specimens. (Belfrage.) 



Microdus tcxanus, n. sp. 



'^ . — Slender, black, shining, with a short pale sericeous pile; head small, 

 subtriangular; mesothorax strongly trilobed; metathorax coarsely reticulated, 

 flanks rugose; wings blackish, with an irregular hyaline streak through first 

 cubital cell and beneath areolet, which is triangular — as usual; legs black, 

 four anterior tarsi except terminal joint white; posterior coxie and femora 

 sanguineous, tibiae and tarsi fuscous, varied with yellowish; abdomen short, 

 narrow, entirely sanguineous, polished; first segment with lateral margin ancl 

 disk carinate on basal half; second segment with a broad deep fovea on each 

 side at base. Length .30 inch. 



Two Specimens. (Boll.) 



