1907.] Catalogue of the Coleoptera of South Africa. 455 



Key to the Species. 



Upper side covered with a velvety-black tomentum, maculated with 

 sienna ; mesosternal process truncate in front and with a distinct 

 porrect tooth above the apical truncate part ,. .. xylvntica. 



Upper side red, tessellated with black, prosternal process normal, 



somewhat sharply aculeate _. . , / okovanga. 



Chibinda sylvatica, n. sp. 

 Plate XLVIL, fig. 28. 



Shape of P. vidcalatissima but a little smaller ; upper side covered 

 with a velvety-black tomentum variegated with numerous small, 

 yellow-ochre markings, much in the manner of P . maculatissima ; 

 under side black ; clypeus with the angles rounded laterally, and 

 slightly wider at the apex than at the base, weakly sinuate in front, 

 and marginate all round ; head and clypeus deeply punctured, the 

 former with a few ochraceous markings ; prothorax sinuate laterally 

 from about the median part to the base, the margin serrulate, the 

 discoidal part is deeply cicatricose punctate, but the punctures are 

 hidden by the velvety tomentum ; scutellum roughly punctate at the 

 base ; elytra elongated, striate, the third interval highly tectiform, 

 the fifth costate, the tomentum hides also the elongated, moderately 

 shallow punctures, and forms on each side three triangularly 

 disposed, darker patches at about the median part ; pygidium 

 strigillate, sparingly maculated with yellow ochre ; abdomen 

 glabrous, punctate ; pectus punctate and briefly pubescent, the 

 pubescence black, metastemum punctate in the centre, grooved, 

 metasternal process without suture, bluntly aculeate, and produced 

 above the aculeate part into a short conical, porrect tooth ; inner 

 side of tibiae moderately pubescent, intermediate and posterior ones 

 uni-dentate, upper side of the latter closely serrulate. 



Length 15-16i mm. ; width 9-9^ mm. 



Hab. Mozambique (Chirinda Forest, Gazaland). 



Mr. G. A. K. Marshall writes of this species, which he discovered, 

 that he " found it flying in the dense forest, and settling on fallen, 

 rotten tree-trunks, into which they were burrowing." 



Chirinda okovanga, n. sp. 



This species might at first sight be taken for a small example of 

 P. camifex, var. variegata, except for the shape of the clypeus. 

 Head black, prothorax brick-red with two small black macules in 



