22 Annals of tlie South African Museum. 



a. Occiput distinctly, roundly incised; the collar not 



much widened towards the apex npilopus. 



h. Occiput transverse ; the collar widened towards the 

 apex. 



Pleuras maculate with black, temples not much 

 sharply obliquely narrowed ; ovipositor as long as 



the body ; length lfi-17 mm diiDhrodj/eni^c, Cum. 



Pleurae immaculate, temples sharply obliquely nar- 

 rowed ; ovipositor distinctly shorter than the body ; 



length 12 mm johnmtis. 



2. Hind tibiae not annulated with white, the fore legs not 



marked with white. Mesonotum not, or only slightly 



marked with red. 



a. Large, 20 mm., robust, the abdomen dilated, broad 

 towards the apex ; occiput not transverse ; temples 

 rounded, collar not longer than the width at the apex cr(i.-<siveiitre. 



h. Moderate or small, the abdomen not much dilated at 

 apex ; occiput transverse ; temples straight, obliquely 

 narrowed ; the collar longer than the width at the apex. 

 Large (15 mm.) pleurae immaculate ; anterior ocellus 



not placed behind the eyes pulchtipenne. 



Small ; length 10 mm. ; mesopleurse maculated with 



rufous ; anterior ocellus placed behind the eyes . . Icptocephalum. 



Gasteruption leptocephalum, sp. nov. 



Black, a large triangular mark on the fore part of the meso- 

 pleurae and the greater part of the basal three segments of the 

 abdomen, red ; legs dark red, the coxee black ; wings hyaline, the 

 stigma dark fuscous, the nervures blackish. ? . 



Length 10 mm. ; terebra 5 mm. 



Flagellum of antennae brownish below ; the antennae placed 

 distinctly below the middle of the eyes ; the first joint not twice 

 longer than the eyes and as long as the third, which is not much 

 shorter than the fourth. Head more than twice longer than wide ; 

 the temples as long as the eyes ; occiput almost transverse, front 

 ocellus placed distinctly behind the eyes ; the hinder separated 

 from each other by about the same distance as they are from the 

 outer edge of the vertex opposite them. Malar space rufous, 

 distinct, as long as the second antennal joint. Head smooth, bai'e, 

 except on the sides of the face and front, which are sparsely covered 

 with silvery pile. Collar long, nearly as long as the mesonotum, 

 closely, distinctly transversely punctured. Mesonotum and 

 scutellum more sti'ongly transversely striated, the striae inter- 

 lacing ; the central lobe not separated from the lateral. Metanotum 

 in the centre weakl^^ irregularly punctured, the sides irregularly 

 transversely striated. Apical slope of metanotum closely, somewhat 



