44 M. Is. Peringuey *s Third Contribution [March 30, 



lateral depression ; elytra very little broader at the base than the 

 prothorax and with the shoulders sloping but little, elongated, little 

 convex, attenuated from the middle, with the margins strongly 

 serrated from that part ; each wing-cover has four smooth, raised 

 lines, the sutural and marginal one only coalescing near the apex, 

 with the intervals reticulated and punctured, and with a faint trace of 

 another rugose line in the second and third interval ; underside very 

 shining with the lateral sides slightly pubescent, outer sides of 

 abdom en very acute, the last one tri-spinose. 



A little more convex than the species of this genus, and without the 

 characteristic lateral depressions on the prothorax. 



Gen. Sphenoptera. Sol. 



206. S. trispinosa. Klug. 



Recorded from the Zambeze River and Northern Transvaal. 



Gen. Discoderes. Chevr. 



207. D. exasperate. Swartz. 



„ from all parts of South Africa. 



Gen. Agrilus. Steph. 



208. A. ferrugineo guttatus. Herbst. 



„ from all parts of South Africa. 



209. A. elongatulus. Cast & Gory. 



Captured in Damaraland. 



„ from Cape Colony and Natal. 



Family : ELATERID^. 

 Gen. Lacon. Cast. 



210. L. senilis, spec. nov. 



Elongatus, squamis nigris albido variegatis dense vestitus ; capite 

 utrinque crista ante-oculari munito ; prothorace tra,7isveiso, angulis 

 posticis productis ; elytris e!o?igatis, prothorace dvplo longioribns, 



