106 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.52. 



wings, small spots on sides of median segment, lateral spots on ter- 

 gites 2-5, lateral spots on sternites 2-5 connected by faint apical 

 lines, femora distaUy more or less, tibiae below more or less, and 

 tarsi, yellow. The eyes are distinctly divergent toward the clypeus, 

 more so than in the male. The ultimate segment of the tarsi are 

 relatively long and are slender at the base, particularly those of the 

 anterior pair. 



Length. — 17-19 mm. 



The resemblance of the male and female is quite close, and in both 

 the head, thorax, median segment and base of abdomen are covered 

 with relatively short, white pubescence. The punctation of the dor- 

 sum of the thorax is fme, close, and regular. The vertex is depressed 

 between the eyes, its middle being noticeably lower than the level 

 of the top of the eyes. The wings are hyaline, veins brown. The 

 flagellum is tawny or fulvous below, lighter in the female than in the 

 male. This species in general appearances resembles very much 

 Jiinei, from which it can be distinguished in the male by the presence 

 in this species of the ventral processes on the second and sixth ster- 

 nites and the form of the genital stipes, and in the female by the 

 divergent eyes and the character of the ultimate segment of the 

 anterior tarsi. 



The type and three paratypes (in the New York Museum of Natural 

 History) are much darker than the specimens on which this descrip- 

 tion is based. In three of the specimens the clypeus is marked with 

 black basally, none show yellow on the scutum, in all the yellow 

 marks on the abdomen are reduced or wanting and the yellow on the 

 legs is less extensive. In structural characters there are no differ- 

 ences. 



Habitat. — California. 



Number of specimens examined — ^Males, 13; females, 1. 



BEMBIX OCCIDENTALIS Fox. 



Figs. 175, 176, 201. 



Bemhex ocddentalis Fox, Proc. Cal. Acad. Sci., (2) vol. 4, 1893, p. 10, female, 



male. 

 Bemhex ocddentalis Handlirsch, Sitz. Acad. Wissensch. Wien, Math.-Nat. CI., 



vol. 102, 1893, p. 868, pl. 3, fig. 13; pi. 7, fig. 38. 

 Bembex ocddentalis Fox, Proc. Acad. Nat. Sci. Phila., 1895, p. 362. 



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

 below, median line on frons extending from between anteimae to 

 anterior ocellus, broad anterior orbits, prothorax almost entirely, 

 lateral lines on scutum sometimes shortened, pair of longitudinal 

 discal lines on scutum, which lines may be developed into a broken 

 U-shaped mark, fascia on scutellum, fascia on metanotum, curved 

 fascia on dorsum of median segment sometimes interrupted medially, 



