NOTES ON AFRICAN CHALCIDOIDEA- — III. 235 



Abdomen.- — First tergite bare medianly, with three post-median bristles at each 

 side ; second tergite with bristles 5, 5 ; from the third to the fifth the arrangement is 

 8, 8, with about four on each side in front. On tergite vi. the spiracle is somewhat 

 large, with one bristle inside and a post-median row of about 10. There are nine to 

 ten bristles between the stylets. The retinacula of the penis are single and stout. 



Length, IJ mm. ; alar expanse, 2J mm. 



$. Similar to the ^ in the colour of the body, wings and legs but the coxae are all 

 clear yellow and the fore femora are never more than faintly darker near the apex. 

 The general colour is a little duller than in the (J. In the antennae the scape is pale, 

 almost milky white, while the pedicel, funicle and club are black. The contrast 

 between the sexes is here decided. 



Head.^-Antennae (fig. 16) : scape, pedicel, ring joint, funicle of three joints, and 

 three in club ; length just under 0*7 mm. Scape swollen medianly (19 : 5) ; hairs 

 on inside sparsely set and on outside confined mainly to upper edge and towards the 

 apex. Pedicel long and narrow (2 : 1), ralher less than half of the scape (8 : 19). 

 Ring joint as in the (^. Funicular joints in the ratio 7:5:5 and expanded consider- 

 ably on the third, so that the latter does not stand out so sharply as in the ^. The 

 club segmented in the ratio 11 : 10 : 14, and half as broad again as the first funicular 

 joint ; the sensoria are shorter, broader and fewer than in the (J. Mouth-parts : 

 the maxillary palpus bears medianly two bristles, an outer and an inner, not one as 

 in the (^. 



In the thorax the ? differs slightly from the (J in that the scutellum is longer and 

 not quite quadrate. On the propodeon the spiracle is large and the notiim about the 

 central keel more extensively smooth, while the reticulation is even coarser. 



Wings.- — Forewings a little shorter and broader than in the ^J. Length, '95 mm. ; 

 breadth, '37 mm. 



Legs not so hirsute as in the ^J ; the subventral rows of the femora have about three 

 bristles less and the femora themselves are narrower. The proportions of ihe tarsal 

 joints are the same in both sexes, except \hat while in the $ the second hind tarsal 

 joint exceeds the first a little, the reverse is he case in the (J. 



Abdomen.- — Ovipositor with only the apical one-twelfth to one-thirteenth of the 

 sting serrate, but with many teeth (9-10) which are well developed. Free portion 

 of sheath one-third of base. Sheath with one external bristle beyond one-half, and 

 three to four stout, along the ventral edge, with in addition a patch (6) of much smaller 

 bristles at the apex. 



Length, sligh ly over IJ mm. ; alar expanse, 2J mm. 



Southern Nigeria : Agege, 1913 (Dr. W. A. Lamborn). 



Type- — a (J in the British Museum ; ono of a series of 5 (J (J and 1 §, and 

 4 broken examples. 



Tetrastichus mauripennis, sp. nov. (figs. 1, 3). 



$. Antennae blackish brown, the pedicel, the last funicular joint and the club 

 almost black, the scape, especially on ihe ventral half, somewhat lighcer. Head and 

 thorax dull black. Wings brown-tinted, nearly as dark as scape. Legs, all coxae 



