140 PROCEEDIN-GS OF THE NATIONAL. MUSEUM vol 75 



BEMUIX ATRIFRONS Smith 



Bcmbex atrifrons Smith, Cat. Hym. Ins. Biit. IMus., vol. 4, 1856, p. 327. 

 Bemhex flavilabris Smitu, Ann. Mag. Nat. Hist., ser. 4, vol. 12, 1873, p. 299. 

 Bembex atrifrons Turnek, Proc. Zool. Soc. London, 1910, p. 353 ; Ann. Mag. Nat. 

 Hist., ser. 8, vol. 16, 1915, p. 441. 



I have at hand a single female that I have referred to this species. 

 It differs slightly from Smith's description: the extreme ventral 

 margin of the clypeus and its extreme ventro-lateral angles are macu- 

 lated ; shortened, narrow anterior orbits are present ; there are lateral 

 spots on the prothorax united with the yellow on the tubercles ; and 

 there are small, round lateral spots on the scutellum. The metano- 

 tum, propodeum, mesopleura, metapleura, the sixth tergite, and all 

 sternites are black. The specimen bears the label, "Adelaide, Behr 

 S." Turner reports this species from Yallingap and Busselton, West 

 Australia, and also from South Perth. 



BEMBIX NUBILOSA. new species 



Type (female). — Black: labrum; mandibles, except tips; clypeus, 

 except pair of small basal spots, of which one is almost obsolete; 

 area between antennae; small vertical stripe below anterior ocellus; 

 scape below; broad anterior orbits, shortened and deflected inward 

 above; narrow posterior orbits, shortened above; tubercles and nar- 

 row posterior margin of pronotum; spot on tegula; small lateral 

 spots on scutellum; spot on posterior-lateral angles of propodeum; 

 short, narrow line on mesopleura ; broad fasciae on tergites 1-5, first 

 interrupted medially, second and third broadly and deeply biemargi- 

 nate on anterior border and also widely emarginate at middle on 

 posterior border, fourth and fifth similar to second and third, but 

 with emarginations less well developed ; lateral spots on sternites 2-4 ; 

 femora apically; tibiae, except line below on first and second pairs; 

 and tarsi ; yellow or creainy white. 



The flagellum is black above, yellowish below, especially toward the 

 apex. The wings are heavily infumated, the hind wings throughout 

 and the basal three-fourths of the front wings. The pubescence is 

 white, dense, and comparatively short on head, thorax, and propo- 

 deum. On the abdomen it is shorter but unusually well developed, 

 especially on the tergites of the last three segments. The frons is 

 ver}^ wide and the inner eye-margins parallel. The sixth tergite is 

 coarsely punctate, even to the apex, giving the surface a roughened 

 appearance. The second sternite is finely punctured with numerous 

 larger punctures among the fine ones; on the midline there is an 

 evident, though not prominent, carina. The fasciae on the tergites 

 are a pale creamy, almost white, color, while the legs are orange 

 yellow. 



