248 Transaction* of the South African Philosophical Socictj/. 



and tbe sternum thickly covered with black pubescence; the hair on 

 the legs black ; the outer side of the four hinder tibiae thickly covered 

 with depressed white pubescence, on the apices of the hinder tarsal 

 joints the pubescence is white, on the lower part of the metatarsus 

 soot-coloured ; wings fuscous-violaceous, spotted with hyaline in the 

 middle: $ . 



Length 12 mm. 



Cape Colony. 



Face and clypeus closely, uniformly punctured, the transverse 

 apex of the latter smooth, the front and vertex more strongly 

 punctured, more sparsely round the ocelli. Mesonotum and 

 scutellum closely and distinctly punctured, the former depressed in 

 the centre, the depression wide, deepest in the centre. Scutellum 

 not flat as usual, and distinctly punctured, narrowed slightly towards 

 the apex, which, in the centre, is roundly depressed ; the sides 

 tuberculate above ; it does not project over the metanotum. The 

 apices of the first and of the fifth and sixth abdominal segments 

 project obliquely at the apex. Mandibles rufous at the base. 



This species has not the flat, plate-like, projecting scutellum of 

 the typical species of the genus, but otherwise appears to be a typical 

 Crocisa. 



Gen. MEGACHILE, Latr. 

 Megachile robertiana, sp. nov. 



Black ; the hair on the head, thorax, apex of abdominal segments, 

 and the basal half of the scopa, clear white ; the apical half of the 

 scopa bright red; wings clear hyaline, the nervures and stigma 

 black. 5 . 



Length 7-8 mm. ; breadth 3 mm. 



Cape Colony. Pearston ; Grahamstown. 



Mandibles, except at apex, thickly covered with white hair ; 

 behind the apex is a tuft of reddish pubescence ; subapical tooth 

 shorter and more broadly rounded than the apical ; behind it is a 

 broad, shallow incision. Clypeus strongly and closely punctured, 

 roundly convex ; its apex in the centre is slightly roundly incised 

 and depressed, this central part being narrower than the sides. 

 The face is not so strongly nor so closely punctured as the clypeus ; 

 the front and vertex are more strongly and quite as closely punctured 

 as the clypeus ; the latter is not quite so closely punctured down the 

 centre. Head as wide as the thorax, which is closely and uniformly 

 punctured, except on the metanotum, where the punctuation is 

 weaker and sparser. Legs black ; the hair white except on the 

 under side of the tarsi, where it is bright red; the metatarsus not 



