STUDIES IX TUE FOSSOEIAL AA^ASPS. 701 



towards the apex, the terminal joint twice as thick as the fourth ; 

 the antennte about as long as the head, thorax, and median segment 

 combined. Eyes slightly emarginate on. the inner margin ; 

 posterior ocelli nearly as far from each other as from the eyes. 

 Head and thorax closely and not very finely punctured ; pronotum 

 narrower than the head, shorter than the mesonotum, nai'rowed 

 anteriorly, the anterior margin straight, the posterior mai-gin 

 widely but not strongly arched. Median segment transversely 

 I'Ugose, with a longitudinal depression in the middle, truncate 

 posteriorly, the surface of the truncation coarsely transversely 

 striated. Abdomen narrower than the thorax and nearly half as 

 long again as the head, thorax, and median segment combined, 

 finely and spa.rsely punctured, the segments scarcely constricted 

 at the base ; petiole of the basal segment very short, the segment 

 abruptly broadened and slightly swollen, nearly as long as the 

 second segment without including the petiole. Apical segment 

 convex, the incision at the apex subtriangular, not quite as deep 

 as its a,pical breadth. Tarsal ungues simple. Cubital and 

 discoidal nervures not continued beyond the cells, stigma not 

 rounded on the inner margin, three times as long as the greatest 

 breadth; radial cell acute at the apex, produced far beyond the 

 third cubital cell, second and third abscissae of the radius nearly 

 equal in length, second recurrent nervure received just before the 

 middle of the third cubital cell. Median cell of the hind wing not 

 emitting any veins from the apex. 



Hob. Willowmore, Cape Colony; JanuarytoMaich(i>r. Braim^). 



This is allied to IL swalei Turn., but differs in the shorter and 

 stouter basal abdominal segment, in the sculpture of the median 

 segment, and in the translucent nervures of the wings. Both 

 differ from typical Myzine by not having the cubital and discoidal 

 nervures continued beyond the cells and in the absence of the two 

 veins emitted from tlie apex of the median cell of the hind wings. 



Myzine constrIctiVentris, sp, n. (PL LXXXII. fig. 15; 

 PI. LXXXIIl. fig. 12.) 



S . Niger, dense alb'o-jnlosus ; mandibuUs bttsi, pt^onoto margitve 

 posterio7'e, tegulis bojsi, ■segtnentis dorsalibus 2-6 macula mediana 

 apicali et macula transversa totrinque, tibiis basi tarsisque pallide 

 Jlavis ; alls hyalinis., vents brunneis. 

 Long. 10-12 mm. 



<S . Clypeus broad and short, shallowly emarginate at the apex. 

 Eyes distinctly convergent towards the clypeus, the inner margin 

 not emarginate, almost straight. Antennae inserted nearer to 

 each other than to the eyes, almost as long as the abdomen, 

 moderately stout and of almost even thickness throughout. 

 Posterior ocelli a little nearer to the eyes than to each other. 

 Head and thorax closely and strongly punctured ; pronotum 

 short, narrower than the head, the anterior mai-gin straight, the 

 posterior margin very feebly arched. Median segment coarsely 



