AU1. 5 GENERIC REVISION OF THE FOSSORIAL WASPS PARKER 83 



Length 16 mm. Described from two specimens, one male and 

 one female, each of which bears the label, '* W. Afrika, Lagos, Coll. 

 Bingham." 



7'l/pe. — In the Zoologisches Museum der Fniversitat, Berlin. 



BEMBIX MOBII Hand'iirsch 



Jiembex tnobii Haxdlirsch, Sitz. Akad. Wissenscli. Wien, Math.-Nal. CI., vol. 

 • 102, 1893, p. 775.— Dalla Torre, Cat. Ilyni., vol. 8, 18!)7, p. rjOS. 



I have before me a single male that I have doubtfully referred to 

 this species. With regard to the structural characters of the antenna, 

 the middle femur, the seventh tergite, the second and sixth sternites, 

 the wings, and the genitalia, it agrees quite well with Handlirsch's 

 description of mohii, but with respect to the maculations it show^s 

 considerable difference. The flagellum is ferruginous, darker above 

 than below, and A^erv dark, though hardlv black, ^at the apex; the 

 scutum, scutellum, metanotum, propodeum, metapleura, and meso- 

 pleura (except a minute spot below the wings) are entirely black; 

 the fascia on the first tergite is greatly narrowed and widely inter- 

 rupted, those on tergites 2 and 3 are much broader and are narrowly 

 interrupted at midline, while those on 4 and 5 are still broader and 

 are continuous; the lateral spots on sternites 2-5 are large and are 

 united by apical lines ; and sternite 6 is ferruginous and bears a pair 

 of small yellow lateral spots. In the absence of any significant struc- 

 tural differences between this foi'm and the male of niohil^ I have 

 chosen to consider it simply a variant of that species, though further 

 collection and study of material may show that it belongs to a dif- 

 ferent species. The specimen bears the lal>el. " Bosum. 22-4^14. 

 Tessmann.*' 



BEMBIX STENEBDOMA Parker 



Bembis stenehdoma Pakker, Proc. U. S. Nat. Mu.s., vol. 52, 1917, p. 79 (Key). 

 Bembix stenohdonw Parkek, Proc. U. S. Nat. Mus., vol. 52, 1917, p. 94 (descrip- 

 tion of species). 



The spelling of the specific name with an " o "' in the text instead 

 of an '"e," as in the key and in the explanation of the figures illus- 

 trating the species, is simply a typographical error. The specific 

 name is derived from two Greek words meaning "' narrow " and 

 '' seventh,'' descriptive of the character of the .seventh sternite, and 

 (he spelling stenehdoma is the correct one. The seventh tergite bears 

 distinct lateral emarginations, thus giving rise to distinct rotmdly 

 pointed lateral angles. This feature was omitted from the original 

 description. 



The species is known only from the type (a male) in the collection 

 of the Academy of Natural Sciences of Philadelphia. It was taken 

 at Florence, Ariz. 



