Ilymenoptera from the Transvaal. 215 



The latter lias the abdomen bright yellow, not fulvous, and 

 the wings a deeper fuscous brown, but otherwise in shape and 

 sculpture it agrees with Guerin's brief description. 



Cerce.ris mitrata, sp. n. 



^ . Clypeus and front to a little above the base of the 

 anteunfe and the abdomen bright chrome-yellow ; mandibles, 

 antennae, the posterior half of the vertex, the occiput and 

 upper half of the cheeks, the posterior half of the pronotum, 

 the scutellum and postscutellum, an irregular mark on each 

 side of the median segment at base with a round detached 

 spot on the inner side of it, and the femora, tibise, and tarsi 

 of the legs red, the red on the head and thorax dark, on the 

 legs slightly yellowish ; the rest of the head and thorax 

 black, the wings fulvous yellow, the apex and apical margin 

 fuscous, the tegulse fulvous red, the extreme base of the 

 abdomen black. The head, thorax, and abdomen coarsely 

 punctured, the punctures on the head and thorax dense, those 

 on the abdomen more sparse and scattered. The front of the 

 head below the antennte and clypeus covered with a fairly 

 abundant beautiful golden pubescence hiding the sculpture. 

 Clypeus strongly convex in the middle, the sides anteriorly 

 emarginate, the lateral angle laminate and produced, the head 

 above and the cheeks broad, the occiput and the cheeks poste- 

 riorly sharply truncate. Thorax narrower than the head ; 

 the scutellum and postscutellum raised gibbous, the median 

 segment convex, the cordiform space at base with divergent 

 oblique striae from a medial impressed line. Abdomen with 

 the basal segment narrowed, forming a pedicel, which is 

 convex above and twice as broad as long ; pygidial area flat, 

 margined at the sides, covered with coarse shallow punctures ; 

 hypopygium convex, with an apical short spine on each side. 



Length, <^, 10 millim. 



Ilah. Collected at Middleburg [Distant), and one male at 

 Johannesburg [Ross). 



Genus Spiiex, Linn, (sensu lat. apud Kohl). 



Sphex xanfkocerus, lUig. 



Sphex xanthocerus, lUlg. Mag. f. Ins. i. (1801) p. 193. 

 Chlorion ynandibulare, Fabr. Syst. Piez. 1804, p. 218. 

 Proncsus cenens, Ltitr. Gen. Crust, et Ins. iv. (1809) p. 56. 

 Pronceus rujipes, Guer. Voy. Abyss, vi. pt. 4 (1848), p. 3-J7. 

 Pronmis instabilis, Smitli, Cat. llym. B. M. iv. (ISoO) p. 240. 

 Chlorion fulvipcs, Tasch. Zeits. f. d. ges. Naturw. liii. (1880) p. 482. 



Four females and four males, Zomba and Fort Johnston, 

 Nyasaland (Rendall). 



