South- African Species of Cossonus, 397 



or ferraginous, with carina and margins black. Elytra a 

 little broader than prothorax at shoulders, which are sloping, 

 base subtruncate, sides parallel to beyond middle ; upper 

 surface slightly convex, with ten complete broad stria3 con- 

 taining rows of large deep punctures, tlie intervals narrow, 

 subconvex, miinitely punctulate ; colour either black or 

 ferruginous, with the suture and margins black or entirely 

 ferruginous. Legs comparatively long, closely punctulate 

 and sparsely i)ubescent, varying in colour from black to 

 ferruginous. 



Natal: Durban. 



Type in the Stockholm Museum. 



Much the largest of our South-African species and with no 

 near ally. 



4. Cossonus africamis, Boh. 

 Cossumis afn'canus, Boh. Sch(5n. Gen. Cure. viii. 2, p. 272 (1845). 



Long. 4.-4^, lat. I5-H "i™- 



Head subconical, vertex impunctatc, foreheael finely punc- 

 tured and with a distinct fovea ; eyes slightly proaiinent. 

 Rostrum scarcely longer than head, narrow and subcylindrical 

 at base, strongly and quadrangularly dilated in the apical 

 half ; upper surface smooth, flattened towards apex, with fine 

 scattered punctuation ; antennge stoutj ferruginous. Pro- 

 tJiorax about as long as broad, apex truncate, much narrower 

 than base, which is lightly bisinuate, sides slightly rounded, 

 and gradually dilated from apex to just behind middle, apex 

 with a slight constriction j upper surface somewhat convex, 

 with a distinct central carina and a shallow longitudinal im- 

 pression on each side of it ; the punctures are close and deep 

 near the carina, becoming finer on the disk and stronger 

 again towards the sides; colour black, shining. Elytra 

 separately rounded at base, a little broader than prothorax at 

 shoulders, which are roundedly prominent, sides parallel to 

 beyond middle ; upper surface slightly convex, with 9 com- 

 plete fine strife containing roN^s of small closely-set punctures, 

 the intervals comparativel_y broad, almost plane, im punctate, 

 but faintly coriaceous ; colour black, moderately shining. 

 Legs piceous, bare, finely punctate ; tibise and tarsi ferruginous. 



Cape of Good Hope (WalMerg), Cape Town (A. 

 Raff ray), 



Ttpe in the Stockholm Museum. 



The punctuation of the discal areas of the prothorax is 

 variable, being much closer and more distinct in some 

 specimens. These latter are thus not unlike very small 



