(he S. African Species of Dinonietopus, cfcc. 315 



1 (8). Elytra manilate or fasciate laterally ; head flavous 

 or testiiceoiis, except at base. 



- (3). Anterior tarsal joint I very elon)j;ate, d^'iitate at tip, 

 '2 and -i short; cepiialic cavity very broad; pro- 

 Ihor.ix angulate at sides in front; body shininjj. Species 1. 



" (2). Anterior tarsal joint 1 simple, lonirer than '2. 



4 (o). Prothorax dentate at sides; cephalic cavity broad ; 



body shininf? : species small Species 2. 



5 (4). Protiiorax anirnlate or not at sides ; cephalic cavity 



extending backwards in the middle behind ; body 

 opaque : speciea larger, more elongate. 

 C (7). Cephalic cavitv with a transverse, central, erect 



lamella ; prothorax angulate laterally Species 3. 



7 (6). Cephalic cavity with a tubercnliform prominence 



behind the epistoma; prothorax not angulate 



laterally Species 4, 



8 (I). Elytra immaculate ; body subopaque. 



9 (10), Head black, epi«;toma tricornute, frontal cavity 



broad ; antennal joints 1 and 2 widened, the 



others filiform Species 5. 



10 (9). Head rufescent, testaceous, or flavous, except at 



base. 



11 (14). Antennse filiform ; elytra not metallic. 



12 (13). Antennal joints 1-4 widened; cephalic cavity 



triangular Species 6. 



13 (12). Antennal joint 1 only widened; cephalic cavity 



transverse Species 7. 



14 (11). Anteiin.ne tapering outwards, joints 4-7 widened; 



cephalic cavity broad ; prothorax rufous, trape- 

 zoidal; elytra metallic Species 8. 



1. Trogloj)S donckieri, (PI. IV. fig. 7, head, (^ .) 

 Dinometojms donckieri, Pic, L'Kchange, xxii. p. 2 ( J ) (lOOO)'. 



c? . Elongate, very narrow, shining, sparsely pubescent, 

 witli a few long erect hairs intermixed; nigro-piccous or 

 black, the antennae, the palpi in part, the head (except on 

 each side at the base), the anterior and basul margins of the 

 prothorax, and the anterior and intermediate legs (the femora 

 wholly or in pait excepted) testaceous ; the elytra with the 

 Juimeri in front and a transverse fascia on the outer part of 

 the disc below the l)ase wiiitish or Havous; the surface- 

 puncturing sparse ami extremely fine. Head triangular, 

 very large, wider than the prothorax, the frontal excava- 

 tion deep, broad, with a slender erect horn in the centre 

 anteriorly, the post(3rior wall of the cavity cpiadridcntate, the 

 epistoma narrow, triangular, convex along the middle, notched 

 iu front ; eyes prominent, large, convex ; antenn;c filiform, 

 very long, comparatively stout, joint 3 as long as 4. Pro- 

 thorax elongate, vtry convex on the disc, angularly dilated 



