224 MR. M. JACOBT ON THE [Mar. 15, 



interstices flat and with some minute punctures, black, shining ; a 

 narrow spot below the scutellum, the outer edge and part of the 

 epipleura" to below the middle, yellowish white ; underside 

 fulvous, clothed w ith whitish hairs, tibiae and tarsi paler. 



Hah. Estcourt, Xatal, on Acacia horrida (G. Marshall). 



Of this species there are at this moment before me. from different 

 parts of Natal, nine specimens, which only vary in the number 

 of spots on the thorax, the latter being either entirely rufous, or 

 rufous with two black central spots, while in several there is only a 

 transverse basal black band of variable width without the other 

 spots ; the head is likewise variable in regard to colour, sometimes 

 entirely fulvous, or with the vertex and a small spot at the base of 

 the antenna; black, and the sides narrowly edged with flavous. 

 Although Suffrian has looked upon the present species as a variety 

 of his C. sttlclfrons, the similar coloration of all the specimens 

 before me and the absence of any intermediate forms, which are 

 neither given by Suffrian nor have come under my notice, induces 

 me to consider the insect as specifically distinct ; the frontal 

 sulcus of the head is only well pronounced in one specimen, but in 

 others very feebly so, and no more than in many other species ; in 

 nearly all the specimens there is a sutural short yellowish stripe 

 below the scutellum, which sometimes surrounds the latter. 



AcoitASTUS NiGBOPLAGiATUs, sp. nov. (Plate XXII. fig. 4.) 



Black, finely pubescent, head with tvvo flavous spots ; thorax 

 pubescent, closely punctured, flavous, with a lateral baud and a 

 central black spot ; elytra closely rugose, a spot on the shoulder, 

 a larger one near the scutellum, another one at the sides, the 

 suture, and a transverse short band connected with the latter, 

 black ; legs black and flavous. 



Length 3 millim. 



Head broad, closely and rather strongly punctured and sparingly 

 pubescent, black ; two spots between the eyes, the clypeus, and the 

 labrum flavous ; eyes large, very moderately emarginate ; antennae 

 not extending much farther than the base of the thorax, thin and 

 slender, the third and fourth joints equal, the following joints 

 slio-htly longer, the lower five joints more or less flavous, the 

 others black ; thorax more than twice as broad as long, the sides 

 rounded near the base and gradually narrowed anteriorly, posterior 

 margin truncate at the middle, the surface extremely closely and 

 rather strongly punctured, almost rugose, clothed with fine white 

 pubescence, flavous, the sides with an oblique irregular-shaped 

 black band not extending to the apex and connected at the base 

 with a central spot of subquadrate shape ; scutellum broad, its 

 apex pointed, the surface black, pubescent; elytra finely rugose 

 throughout, the basal margin in shape of a transverse ridge, the 

 apex with some very short costae, the suture black, this colour 

 widened into a short transverse band near the apex, a small spot 

 placed on the shoulder, a larger one near the scutellum, and an 

 elongate spot at the lateral margin below the middle black ; under- 



