NOTES ON AFRICAN CHALCIDOIDEA — IV. 



421 



Abdomen narrow and long pointed, only three-quarters as broad as the thorax. 

 First tergite short, its posterior margin cutting a line from the stylets to the petiole 

 at one-third ; second tergite markedly biconcave, one-third as long as the first ; 

 third tergite about one-half of the first ; fourth tergite like the second ; fifth and 

 sixth a little shorter. The dorsal surface of the abdomen as a whole very smooth : 

 7-8 stiff bristles from punctures at the side of tergite i. ; on tergite ii., the overlaps 

 bear numerous similar bristles in 5-6 rows ; tergites iii. and iv. have each one row, 

 and tergite v. two rows ; tergite vi. is basally bare, but with the distal two-thirds 

 closely set with bristles. The projecting part of the sheath is shorter than the ridge 

 on tergite vii. 



Lengthy 5| mm. ; alar expanse, 8 mm. 



Nyasaland : Lake Nyasa, Monkey Bay, 27. v. 15 (Dr. W. A. Lamborn). 



Type, a $ in the British Museum. 



Through the courtesy of the Curator of the Albany Museum (Mr. J. Hewitt) I have 

 been able to examine the type of Hockeria melanaria, Cam. (Rec. Albany Mus., i, 

 p. 314,1905). This species, which is correctly placed, may be told at once from H, munda 

 by the legs, which are entirely black, except on the knees, and obscurely on the last 

 tarsal joints. The mid femoral pleural impression in H. melanaria bears about 

 fourteen fine ridges. 



Ooencyrtus lamborni, sp. nov. (figs. 5, 6). 



$. Head, prothorax, mesonotum and pleurae shining, blackish ; the scutellum 

 concolorous with the rest of the thorax, but dull, except at the tip, though somewhat 

 refringent when highly magnified and in strong sunlight. Apex of scutellum shining. 



Fig. 5. Ooencyrtus lamborni, sp. n., 2 {^a, antenna ; h, trophi ; c, mandible. 



blue-black ; there is a trace of the same colour in the reflections of the malar space. 

 Propodeon blackish brown ; the abdomen lighter, pale. Wings hyaline ; neivuies 

 light brown. Legs and antennae pale, the funicle a little smoky. 



