Some New -Genera and Species of Hymcnoptcra. 225 



the upper part with the puoctures larger and more widely separated. 

 Metanotal area hollowed in the centre, the sides stoutly, irregularly, 

 obliquely striated. Pygidium strongly, deeply punctured, of equal 

 width throughout, the apex roundly incised, the sides forming teeth. 

 Epipygium not incised down the middle. 



Cerceris whiteana, sp. nov. 



Length 11 mm. 2 . 



Cape Colony. Brak Kloof, June. 



Very similar to C. Jwlconota ; may be known by the metanotal 

 area not being furrowed, by the metanotum being neither so closely 

 nor so strongly punctured, by the mesonotum and scutellum being 

 much more weakly and sparsely punctured, by the apex of the 

 clypeus not projecting so much, it being consequently not much 

 longer than its width at the apex, while in holconota it is distinctly 

 longer than its width at the apex, which is not quite transverse as 

 in Jwlconota, but slightly roundly, broadly projecting in the middle 

 with the sides tuberculate ; the band on the third abdominal seg- 

 ment is narrow in the middle, broad at the sides where it extends 

 to the base of the segment ; there is a thin line on the centre of the 

 fourth segment and a shorter, thicker one on the fifth ; there are no 

 marks on the pronotum and a narrow line on the scutellum ; there 

 is no distinct mark above the face ; tegulge red ; under side of 

 nagellum brownish, as is also the under side of the scape ; there is 

 no distinct keel on the front. In holconota the mesonotum is dis- 

 tinctly depressed in the centre, which is not the case here. The 

 colouration, other than in the points noted, is the same. 



Cerceris nigrifrons, Sm. 



Specimens from Brak Kloof agree fairly well with Smith's 

 colouration description. The species is variable in colouration ; 

 the two yellow marks on the face mentioned by Smith may be 

 absent ; the legs vary in the amount of black on them ; the abdominal 

 petiole may be for the greater part black. As usual no mention is 

 made by Smith of the sculpture of the metanotal area and of the 

 pygidal area ; the former is strongly striated, the striae being stout 

 and clearly separated ; the lateral is of equal width, transverse at the 

 apex and strongly and deeply punctured. The epipygium is almost 

 transverse at the apex ; the penultimate segment is produced 

 laterally at the apex into sharp teeth. Apex of clypeus broadly 

 rounded; the lateral fringe golden. The female I have not seen, 

 nor had Smith. 



