148 Descriptive Catalogue [1896. 



median tooth, tip of maxillae not articulate ; eyes large, two supra- 

 orbital setae ; prothorax elongate ; elytra oblongo-ovate, plane not 

 truncate behind ; legs slender ; tarsi alike in both sexes ; claws not 

 pectinate. 



Gen. HEXAGONIA, Kirby. 

 Trigonodactyla, Dej. 



Mentum trilobate, the median lobe shorter than the lateral ones ; 

 ligula horny, projecting; the paraglossse linear, not much longer than 

 the ligula and fused with it; palpi slender, last joints subcylindrical, 

 acuminated at the tip ; mandibles long, arcuated, and sharp ; head 

 triangular, with a short narrow neck ; antennae reaching the base of 

 the elytra, first joint cylindrical, second very short; prothorax cordi- 

 f orm ; elytra parallel, rounded behind and very flat ; legs short ; tarsi 

 broad, triangular, the fourth one much broader, bilobate ; claws not 

 pectinate. 



Hah. Eepresentatives of this genus occur in India, Burmah, the 

 Malayan Archipelago, and Africa (Zanzibar, Guinea, Senegal). 



Synopsis of Species. 



Elytra light testaceous . . . . immaculata. 



Elytra with a triangular posterior black patch ; head black, 



postical patch short terminata. 



Head red, postical patch longer 'prceusta. 



Elytra with an ovate black patch on each side natalensis. 



Hexagonia immaculata, Chaud., 

 Bull. Mosc, 1861, ii., p. 533. 



Pale ferruginous ; head and prothorax dark brown ; antennee and 

 legs light testaceous ; head with moderately deep but not closely set 

 punctures in the anterior part, and with a deep longitudinal depres- 

 sion on each side ; prothorax cordate, with the outer margins 

 slightly recurved and with an inner row of punctures, the longi- 

 tudinal discoidal groove also broadly punctured ; elytra broader than 

 the prothorax, very depressed, parallel, punctato-striate, with the 

 intervals plane, and having some irregular broad punctures on the 

 third, fifth, and seventh. Length 11|- mm. ; width 3^ mm. 



Hah. Natal (D'Urban). 



Hexagonia pr.^usta, Chaud., 

 Bull. Mosc, 1861, ii., p. 533. 



Light rusty red, with the head darker ; head slightly punctulated, 

 the longitudinal impressions on each side distinct, but not very deep ; 

 prothorax cordiform, with the outer margins slightly recurved, and 



