|"24i"| Di e Hymenopterengruppe der Sphecinen. II. a.3q 



i35. Sphex argentifrons Smith (non Fabr., non Lep.). 



Sphex argentifrons Smith, Trans. Ent. Soc. Lond., §, 248 1868 



»Female. Length 9 '/ 2 lines. Head and thorax black, the abdomen red. Head". the 

 face covered with bright silvery pile, interspersed with long thin white pubescence 

 which also thinly covers the wole head; mandibles ferruginous. The thorax clothed 

 with pale glittering pubescene, which is most dense on the metathorax and most sparing 

 on the mesothorax above; the legs bright ferruginous, with the coxae, and apical half 

 of the posterior tibiae black; the wings fulvo hyaline, their apical margins faintly 

 clouded, the nervures ferruginous. The abdomen bright ferruginous. 

 Hab. Champion Bay.« 



i36. Sphex aurifrons Smith. 



Sphex aurifrons Smith, Journ. Proc. Lin. Soc, III, 157, 9 i85g 



Sphex niger ; facie pube aurea vestita, aus flavo-hyalinis apice fuscis, abdomine 

 pilis sericeo-aureis vestito. 



»Fem ale. Black; the face densely clothed with golden pubescence, the head having 

 a number of scattered long golden-yellow hairs. Thorax thinly covered with long yellow 

 pubescence, which is most dense at the sides of the metathorax; the tibiae, tarsi and 

 posterior femora ferruginous; the claw-joint of the tarsi black; the tibiae and tarsi with 

 black spines; the wings fulvo-hyaline, their apex with a narrow fuscous border, the 

 nervures ferruginous. Abdomen covered with a fine, thin, golden-reflecting pile; the 

 apical margins of the Segments rufo-testaceous, the testaceous margin produced in the 

 middle into a triangulär shape, most conspicuously so on the Segments beneath. 

 Hab. Aru.« 



137. Sphex Belfragei Cresson. 



Sphex Belfragei Cresson, Trans. Am. Ent. Soc. Philad., IV, 212, cT 5 . 1872 — 1873 

 »cT 5 — Black, with sparse black pubescence, more dense on head; clypeus sub- 

 convex, densely, rather coarsely punctured, with a small fovea near apical middle; pro- 

 thorax subemarginate above; mesothorax shining, with a slight opaline iridescence, 

 sparsely and finely punctured; scutellum shining, deeply impressed centrally; meta- 

 thorax with a short dense, erect black pubescence, Upper surface densely transversely 

 striated; wings yellow-hyaline, subviolaceus, apical margins broadly fuliginous; legs 

 black, tibiae brown sericeous within; abdomen shaped much as in texana, yellow- 

 ferruginous, shining, apex more or less obfuscated, sometimes blackish, petiole black. 

 Length 75 — 90 inch. 



Four <$ 5 specimens found on Sumach flowers in August. This has the same 

 form as texana, from which it is at once distinguished by the yellow wings and by the 

 absence of all silvery markings.« 

 Nearktische Region: Texas. 



i38. Sphex Bohemanni Dhlb. 



Sphex Bohemannis Dhlb., Hym. eur., I, 436 1845 



Abdomen totum nigrum. Pedes nigri. Alae violaceae. Corpus magnum. Alae 

 saturate violaceae, cellula radiali apice obtusa. Abdomen mediocre, petiolus brevis, 



