Some New Species and others of Foxxnrii.il Hymenoptera. 495 



SUBFAMILY NYSSONINAE. 



GENUS NYSSON Latr. 

 NYSSON LUDOVICI, sp. u. 



c$ . Niger ; mandibulis basi, clypeo dimiclio apieali obscure, 

 autennis, pronoto margine postico, callis humeralibus, tegulis, pedi- 

 busque, coxis exceptis, ferrugineis ; vertice puncto utrinque, segment i 

 median! spiuis apicalibus, tergito primo macula magna utrinque ; 

 tergitisque 2-5 fascia apieali flavis ; segmentis sexto septimoque 

 ferrugineis ; alis fusco-hyalinis, venis uigris. 



9 . Mari simillima, tergitis tertio quartoque fere omuiuo fiavis, 

 secuudo margine extreme, quinto lateribus flavis, fascia apieali obso- 

 leta ; antennis dimiclio apieali iufuscatis. 



Long. ( 9 , 10 mm. 



(J . Eyes convergent towards the clypeus, but not quite as stronglv 

 so as in capensis Handl., separated at the base of the clypeus by a 

 distance slightly exceeding twice the length of the scape ; the anterior 

 margin of the clypeus straight. Front and clypeus covered with 

 silvery pubescence, the head rugosely punctured, more coarsely on' the 

 front than on the vertex, a median longitudinal carina reaching from 

 the base of the antennae half-way to the anterior ocellus ; posterior 

 ocelli nearly twice as far from the eyes as from each other. Hind 

 margin of the pronotum level with the niesouotum, almost transverse. 

 Mesouotum, scutellum, postscutellum and mesopleurae rugose; the 

 basal area of the median segment shining, with eight longitudinal 

 cariuae, the sides of the segment reticulate, the spines at the apical 

 angles long and acute. The two basal tergites rather sparselv, but 

 not very finely punctured ; tergites 3-6 opaque, microscopicallv and 

 closely punctured, the sixth tergite with marginal lateral carinae on 

 the apical half ; seventh tergite granulate, the lateral margins raised 

 forming carinae, which are prolonged into a short blunt spine at each 

 of the apical angles ; the apical margin between the spines transverse, 

 thus differing from capensis, in which there is a rounded process between 

 the spines. Sternites 2-5 with a fringe of long pale hairs in the 

 middle of the apical margin. 



9 . The second sternite is rounded at the base, not forming an 

 angle. In both sexes the cubitus of the hind wing originates far 

 beyond the ti-ausverse median nervure. 



Hob. M'fongosi, Zululand (W. E. Jones'), April, 1916. 



Very near capensis Handl., but differs in the seventh tergite of the 

 male, and in the somewhat broader face, which is due to the lesser 

 convergence of the eyes. The yellow colour on the tergites is also 



