96 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 52. 



base of abdomen is white, relatively long and moderately dense; 

 elsewhere on the abdomen short and sparse. The ultimate tergite of 

 the abdomen apically bears short, well-marked lateral carinae that, 

 though not evident in a dorsal view, set off a fairly well defined 

 middlefield, which is strongly ^\Tinkled, a character in which it 

 resembles B. heJfragei. This character and the unusually long labrmn 

 fomi a pan- of distmguishmg features by which this species can be 

 readily recognized. 



Length. — 14 mm. 



It is possible that this is the female of the preceding species. 

 Although these two specimens, on which the two species are based, 

 do not resemble one another sufficiently to warrant my associating 

 them as sexes of one species, nevertheless their resemblance to the 

 male and female respectively of helfragei causes me to suspect that 

 they may be sexes of a single species. 



Described from a single specimen in the United States National 

 Museum. 



Habitat. — Arizona. 



Type.— Ciii. No. 19782, U.S.N.M. 



BEMBIX FOXl, new spccicB. 



Figs. 155, 156, 193. 

 Bembex sayi Fox, Proc. Acad. Nat. Sci. Phila., 1895, p. 359, female, male. 



Male. — Black: Labrum, mandibles except apices, clypeus, scape 

 below, frons between antennae, broad anterior orbits somewhat 

 shortened and also deflected inward above, spot below anterior ocel- 

 lus, narrow posterior orbits, posterior border of pronotum, sides of 

 prothorax except irregular spot in front of tubercles, weak lateral 

 lines and pair of short discal lines on scutum, spot on sides of median 

 segment, spot on metapleurae, irregular spot on mesoplcurae, fasciae 

 on tergites 1-6, first somewhat widely interrupted, second broadest 

 and inclosing a pair of elliptical dorsal black spots, third with a pair of 

 dorsal anterior emarginations, fourth and fifth similar to the third but 

 with broader and more shallow emarginations, apex of seventh, fascia 

 on second stemite inclosing transverse black area posterior to the 

 median process, lateral spots on stemites 3-7, spot on anterior and 

 middle coxae, femora except basally and line above on first pair, tibiae 

 except line below on first pair, and tarsi, bright yellow. 



The flagellum is dark above, light or yellowish below; segments 

 7-8 are shghtly spinose on the posterior border; the ultimate seg- 

 ment is somewhat cm-ved and tapers toward the apex where it is 

 roundly but obliquely tnmcate. The pubescence is white and tol- 

 erably well developed on head, thorax, median segment and base of 

 abdomen; it is shortest on the dorsum of the thorax and longest on 



