1902.] Catalogue of the Coleoptera of South Africa. 689 



and with the posterior angle sharply projecting, it is deeply and 

 closely punctured ; scutellum triangular, not elongate, as long as 

 broad, not scaly ; elytra elongato-quadrate, rounded singly at apex, 

 plane with the humeral callus conspicuous and elongate longi- 

 tudinally, moderately punctulate, each puncture bearing a very 

 short, black bristle, decumbent but erect, however, in the basal part, 

 suture and outer margin with seriate black bristles ; propygidium 

 clothed along the margin only with white scales in both sexes ; 

 pectus clothed with dense greyish hairs ; anterior tibiae strongly 

 tri-dentate ; the teeth are equi-distant, the apical one is longer than 

 the intermediate ; the anterior tibiae have a distinct, inner spur ; 

 the hind ones are longer than the thigh, moderately swollen in 

 the male, less so in the female ; the hind tarsi are of nearly equal 

 length in both sexes, but more broadly triangular in the male ; the 

 fifth joint is as long as the four preceding ones taken together, and 

 tri-denticulate beneath. 



Length 8-9 mm. ; width 4^5 mm. 



This species is intermediate between Pachycnema and Pherocoma, 

 and it is difficult to decide where to place it ; but the hind claw is 

 simple, and it is therefore a Pachycnema. Burmeister included it 

 among his Anisonyx ; but the facies is very different. 



Hah. Cape Colony (Namaqualand). 



PACHYCNEMIDA, n. gen 



Shape and facies of Pachycnema, but the upper lobe of the 

 maxillae is very slender and penicillate ; the maxilla is armed on 

 each side with four falcate teeth facing each other, but gradually 

 decreasing in size from the uppermost, the apical joint of the 

 maxillary palpi is nearly sub-oblong and compressed ; the clypeus, 

 however, is not acuminate ; the other generic characters are as in 

 Pachycnema. 



Pachycnemida signatipennis, Burm., 

 Plate XLII., fig./f: IC- 

 Handb. d. Entom., iv., 1, p. 66. 

 Pachycnema farinosa, Pering., Trans. S. Afric. Phil. Soc. 



Light chestnut, densely clothed with lanceolate white appressed 

 scales, and a very brief, greyish pubescence on the head and 

 prothorax ; scutellum scaly, elytra covered^ with white scales, 

 denser and more closely set in parts, and thus forming on each side 

 three narrow, elongate patches on the anterior part and two long, 



44 



