ART. 5 GENERIC BEVISION OF THE FOSSORIAL WASPS PARKER 155 



almost completely; metapleura; mesopleura; mesosternum, except 

 spot in front of middle coxa ; broad fasciae occupying the middle of 

 tergites 1-5, the first bearing a i^rominent median anterior emargina- 

 tion, the second and third each enclosing a pair of black discal spots, 

 the fourth biemarginate on anterior border, the fifth narrowed and 

 interrupted at mid-dorsaj line; sixth tergite with broad V-shaped 

 apical maculation; sternite two with pair of anterior lateral spots 

 and pair of posterior lateral spots joined by a narrow apical line; 

 sternites 3-5 with posterior lateral spots joined by apical lines; legs, 

 except more or less black on coxae and trochanters, a black stripe 

 above on all femora, and some black below on anterior tibiae; 

 yellow. 



The flagellum is ferruginous, somewhat darker above than below, 

 especially in the case of the first two segments. The clypeus is not 

 more prominent than normal and is only slightly carinate on midline 

 at the base. The ej^es are but slightly divergent at the clypeus. The 

 anterior metatarsus is provided with six spines. The wings are 

 hyaline and the left front wing bears a small triangular accessory 

 cell between the first and second cubital cells. The pubescence is very 

 short and sparse. The legs of the U-shaped discal mark on the 

 scutum are distinctly reddish in color. 



Length 20 mm. Described from a single female (type) bearing 

 only the label, " Coll. Bingham." It bears no locality label whatever. 

 In general appearance it resembles melancholica Smith and taiwana 

 Bischoff, but the maculations are more extensively developed and are 

 also brighter in color than on those two species. 



Type. — In the Zoologisches Museum der Universitat, Berlin. 



Genus MICROBEMBEX Patton 



Figures 9, 10 



Microiemhex Patton, Bull. U. S. Geol. Surv., vol. 5, 1879, p. 364. — Fox. Proc 



Acad. Nat. Sci. Phila., 1895, p. 363.— Kohl, Ann. des K. K. Naturhist. 



Hofmus., vol. 11, 1896, p. 434.— Parkeb, Proc. U. S. Nat. Mus., vol. 52, 1917, 



p. 117. 

 B. Bembeces aberantes Handlibsch, Sitz. Akad. Wlssensch. Wien, Math.-Nat. 



CI., vol. 102, 1893, p. 878. 

 Bembex Fox (part), Proc. Acad. Nat. Sci. Phila., 1894, p. 303. — Dalla Tobbe 



(part), Cat. Hyiu., vol. 8, 1897, p. 501. 



Genotype. — Berribex monodonta Say by original designation. 



Members of this genus differ from those of the genus Bemhix and 

 other allied genera in that the distal end of the radial cell does not 

 lie on the anterior margin of the wing (fig. 10). 



Head wide as thorax ; middle of vertex slightly depressed below the 

 level of the top of the eyes; frons unusually wide, making up half, 



