238 JAMES WATERSTON. 



(J. Antennae yellowish brown, the club very black. The thorax not so dull as in 

 the $. Wings more faintly brown-tinted than in the $. Legs yellowish brown, the 

 mid femora with a darker streak superiorly ; the coxae blackish near the base, 

 otherwise clear brown ; hind coxae distinctly blue-black and shining above. Abdomen 

 as in (J, except the median basal one-third, which is transparent yellow. 



Head.- — Antennae (fig. Ic) with the sense-organ on the scape slightly longer than in 

 atriclavus, with only three long bristles standing on the outer aspect, and subventral 

 rather than ventral. Pedicel shorter and broader than in atriclavus (4 : 3), and 

 two-sevenths of the scape in length ; in mauri'pennis the pedicel is shorter 

 than the first funicular joint (8 : 11), in atriclavus it considerably exceeds the first 

 funicular joint (7 : 5). The funicular joints are sub-equal, the second being very 

 slightly longest and the fourth the shortest ; the first pair are cylindrical and the 

 others, having the angles rounded, appear to be shorter than they really are. 

 The club is not quite three-fourths as long as the last pair of funicular joints together, 

 while in atriclavus the sum of those joints is not quite as long as the club ; in mauri- 

 'pennis the club, segmented in ratio 8 : 7 : 6, is hardly swollen and not more than one- 

 sixth wider than the first joint of the funicle. Sensoria as follows : first funicular, 

 1,3,1,3; second to fourth 2, 4, 2, 4 ; on club : (1st) 1, 5, 1, 4 ; (2nd) 1, 4, 1, 4 ; 

 (3rd) 1, 1, 1, 1. Length of antenna, I'l mm. 



Length of (J, over 2 mm. ; alar expanse, 3 "8 mm. 



Nyasaland : Mt. Mlanje, 6. i. 1914 {S. A. Neave). 



Type, a § in the British Museum, one of a series of 1 cJ and 44 $ §. 



Tetrastichus sculpturatus, sp. nov. (figs. 4, 5). 



§. Antennae wath the funicle and club black, scape pale, pedicel darker, but not so 

 black as the funicle. Head and abdomen purplish black, with indefinite reflections. 

 Thorax with the pleurae dull black, notum with a slight dark blue or green tinge. 

 Wings distinctly tinted, darker a little below the marginal. Legs with the coxae 

 nearly black, fore femora darker brown, all tibiae, tarsi and trochanters pale ; mid 

 and hind femora a little darker. 



Head broad across the frons ; eyes separated by more than two diameters ; other- 

 wise as in the preceding species. Antennae (fig. 46), length 1 mm. ; the scape 

 narrow (9 : 3), with six to seven weak short bristles along the ventral edge, the two 

 subapical being a little stronger ; pedicel narrow (7 : 3) and more than one-third of 

 the scape (7 : 18) ; funicle gradually expanded, the last joint wider (9 : 7) and very 

 slightly shorter than the first, while i. and ii. are equal ; club segmented in the 

 ratio 9 :6 : 7, but not much wider than the last funicular joint. Sensoria on funicle : 

 (1st) 2, 2, 2, 2 ; (2nd) 2, 4, 2, 4 ; (3rd) 2, 4, 2, 5 ; on club : (1st) 2, 9, 2, 9 ; (2nd) 

 2, 6, 2, 6 ; (3rd) 1, 3, 1, 3. Mouth-parts : maxillary palpus thrice the labial, with 

 one outer median bristle. 



Thorax.— 'Pronotnm with posterior row of ten bristles, the edge distinctly excavated 

 at the spiracle. Mid lobe of mesonontum with three stout bristles inside the parap- 

 sidal furrows, all on the mid region and none near the scutellum. Propodeon 

 dmilar to that of atriclavus, the notum being coarsely reticulate anteriorly with a 

 smoothed median area round the central keel and sunk before the lateral kee), but 



