1907.] Catalogue of the Coleoptera of South Africa. 517 



ANATONOCHILUS, n. gen. 



Mentum parallel and plane as far as the palps cavity, greatly 

 thickened vertically on the outer face and with the thickened part, 

 which is in width half the length of the whole mentum, completely 

 excavated and transversely striolate, the two margins are plainly 

 sinuate, and below the excavation is a longitudinal keel on each 

 side ; teeth of upper lobe very long and slender, those of the inner 

 lobe also long and very sharply bifid ; the other characters are the 

 same as in Cosnochilus. 



The difference in shape of the mentum justifies the removal of 

 this insect into a separate genus, to which belong also C. campbclli, 

 Westw., from Eastern India ; C. curtipes, Westw., from Assam ; 

 C. taprobanicus, Westw., from Ceylon and Eastern India, &c. In 

 Westwood's figure of A. glabratus the deep and broad excavation of 

 the mentum is not sufficiently indicated. 



Anatochilus glabratus, Bohem., 



Insect. Caffr., ii., 1857, p. 50; 



Westw., Thesaur. Entomol., 1873, p. 37, pi. xii., fig. 9. 



Piceous black or chestnut-brown, very shiny, glabrous except for 

 a short fulvous pubescence on the anterior and intermediate femora, 

 and the ante-coxal fore process ; head with a transverse, not highly 

 raised carina on the vertex, clypeus highly convex in the centre, 

 arcuately but not deeply emarginate in the anterior part, transversely 

 plicate except behind the occipital keel, where it is punctate ; 

 antennas piceous red ; prothorax ampliate rounded laterally in the 

 median part, slightly sinuate below that, and with the outer angles 

 plainly but not broadly rounded, surface closely punctate, the 

 punctures round and separated by a smooth interval inferior in width 

 to their own diameter, but with a slightly raised sub-undulating wall 

 in the anterior part, especially in the female ; scutellum weakly 

 punctulate ; elytra deeply and narrowly sub-punctate striate in the 

 discoidal part, but with the intervals plane and impunctate ; 

 pygidium moderately convex and faintly keeled longitudinally in 

 the male, more convex and keel less in the female, impunctate or 

 non-striolate like the under side ; legs glabrous, tarsi almost glabrous, 

 and nodose at apex. 



Length 12-17 mm. ; width 5-7 mm. 



This species is termitobious. "Flies only at sunset" (G. A. K. 

 Marshall). 



Hob. Transvaal (Johannesburg, Lydenburg) ; Southern Rhodesia 

 (Salisbury) ; Limpopo River and Senegambia, teste Westwood. 



