AKT. 5 GENERIC REVISION OF THE FOSSORIAL WASPS PARKER 99 



BEMBIX ALACRIS. new species 

 Figures 87-89 



Type (male). — Black: mandibles, except tips; pair of small spots 

 below anterior ocellus; narrow posterior orbits; narrow line on pos- 

 terior border of pronotiim uniting small lateral spots ; spot on side of 

 prothorax extending to posterior border of tubercle; lateral spot on 

 scutum at base of wings; narrow fascia on posterior border of scutel- 

 lum ; narrow, broken fascia on metanotum ; pair of spots on posterior 

 surface of projwdeum; lateral angle of propodeum; spot on side of 

 propodeum ; spot on metapleura ; fascia on first tergite, narrowed and 

 interrupted at dorsal midline ; broad fascia on second, inclosing a pair 

 of dorsal elliptical spots and narrowed at dorsal midline ; broad fascia 

 on tergites 3, 4. and 5. biemarginate on anterior border and sinuate at 

 midline on posterior border; fascia on sixth tergite; lateral spots on 

 sternites 2-5 j femora in part; tibiae, except below on all; and tarsi, 

 except lower surface of anterior pair: yellou-^. 



The wings are hyaline; the antennae are black, the scape being; 

 very thick and heavy. Of the flagellum, segments 6. T, 8. and to a 

 slight extent 9. aie spinose. and segments 9, 10, and 11 are excavated 

 below. The ultimate segment is strongly curved, flattened and 

 pointed at the apex, which is very light in color. The middle femora 

 are dentate, the teeth, five in number, being limited to the apical half 

 of the femur. The second sternite bears a well-developed median 

 carina and the sixth, a conspicuous median swelling which can not 

 be properly called a tubercle or process. The frons between the 

 antennae is carinate and the eye-margins are approximately parallel. 

 The anterior metatarsus is provided with six spines, which are Avhite 

 in color. The seventh tergite is abruptly narrowed toward the apex. 

 Avhich is roundly pointed (fig. 88). The seventh sternite is much 

 narrowed at the apex and is not distinctly carinate. 



This species stands close to B. melanoim Handlirsch, from which 

 it may be distinguished by the different form of the seventh tergite^ 

 by the lack of a process on the sixth sternite, by the white spines on 

 the anterior metatarsus, and the different form of the genital stipes. 



Length 17 mm. Described from a single specimen bearing the 

 label, " Somali, Salakle, 7-6-01, B. V. Exlauger." 



Type (male). — In the Zoologisches Museum der Universitat, Berlin. 



BEMBIX ALDABRA, new species 



Figures 83, 84 



Type (male). — Black: labium; mandibles, except tips; clypeus; 

 area between antennae; pair of spots on frons below anterior ocellus; 

 scape below ; broad anterior orbits deflected aAvay from the eye- 

 margins above and extended to the vertex ; posterior orbits narrowed 



