506 Mr. E. E. Turner on the 



rather long but sparse ; the lateral lobes of the mesonotutn 

 sparsely punctured, tlie middle shining, with two or three 

 scattered punctures ; a deep sulcus on each side, slightly 

 convergent posteriorly ; the anterior margin smooth and 

 shining. IScutellum and postscutelluni smooth and shining, 

 with a few small and scattered punctures; the propleuras 

 obscurely striated at the base, almost smooth at the apex, the 

 luesoplcuiee closely punctured. Median segment opaque, 

 vi'ry finely punctured, rugulose, with a narrow sulcus, bordered 

 by a low carina on each side, from the base, gradually be- 

 coming narrower and shallower to the base of the oblique 

 ]iosterior slope. Abdomen shining, rather sparsely punc- 

 tured, very slightly narrowed at the base ; the petiole of the 

 basal segment as broad as long, the apical segment finely and 

 closely longitudinally striated. The sides of the median 

 segment are closely obliquely striated. 



Black ; the mandibles, palpi, and legs (except the coxae) 

 bright ferruginous; the tegulse testaceous, the antenna? 

 fuscous beneath. Wings hyaline, nervures ferruginous. 

 The extreme apex of the epipygium rufo-testaceous. Tlie 

 radial cell is rounded at the apex ; the second cubital cell is 

 about two-thirds of the length of the third on the ra iial 

 iiervure ; the first recurrent nervure is received at the middle 

 of the second cubital cell, the second just beyond the middle 

 of the third. The pubescence on the whole insect is very 

 sparse and greyish. 



Length 11-12, length of wing 7 mm. 



JJab. Lake Ngami. 



Type in B. M. 



Described from two specimens. 



Plesia [Mesa) capensis, Lei)el. 



Tiphia capensis, Lepel. Hist. nat. Ids. Hym. iii. p. 551. ii. 1, pi. xxxv. 

 %. 1 (1845;, ?. 



The figure showing the neuration of the wing proves that 

 this is not a Tiphia, I cannot identify it as having been 

 subsequently desciibed, though it must come very near 

 P. hottentota, Sauss. 



Plesia {Mesa) innotata, sp. n. 



$ . Clypeus short and broad, punctured at the base, the 

 apical margin slightly depressed and smooth ; the apex of 

 the labrum with a fringe of long, stiff, golden hairs. Man- 

 dibles smooth and shining, with a very sparse fringe of long 

 golden hairs ou the outer margin. Head strongly punctured, 



