48 Memoirs of the Indian Museum. [Vol. VIL 



metasternum is unpunctured and has smooth hairless narrow lateral areas. The 

 abdominal sterna are glossy. The outermost grooves of the elytra are very indistinctly 

 punctured ; the dorsal grooves are unpunctured. The middle tibiae each bear two, and 

 the posterior one, strong spine before the apex. 



Genus PAXILLUS, MacLeay, 1819, p. 105. 



Incl. Paxilloides, Kuwert, 1896 ; PaxiUosomus, Kuwert, 1896 ; Spasalus, 



Kaup, 1868. 



Type, Paxillus leachii, MacLeay, 18 19, p. 106 (Paris edition, p. 20). 



Paxillus camerani (Rosmini). 

 Fig. VI, 6 ; p. 45. 

 Paxillosonms camerani, Rosmini. 1902, pp. 4-5. 



One specimen from the Upper Amazon ; 16 mm. long. 



The anterior margin of the labrum is straight ; the sides are lightly convex. The 

 last five joints of the antennae are lamellate, the middle lamella being distinctly the 

 longest, though this scarcely exceeds the one immediately preceding it by as much as 

 does the corresponding lamella of P. pentaphyllus. The mandibles each have three 

 distinct terminal teeth, of which the middle one is perhaps slightly nearer to the one 

 below it than to the one above it. The left anterior lower tooth is broader than the 

 right and is probably bidentate when unworn as in other species. The central tubercle 

 and parietal ridges are small. The frontal ridges extend from the central tubercle at a 

 very obtuse angle to each other towards the outer tubercles, their course being slightly 

 curved. The inner tubercles are distinct and are nearer to the outer than to the central 

 tubercle. The outer tubercles, which are bluntly conical, are little larger than the inner ; 

 they do not overhang the angles of the clypeus, which project horizontally in front of 

 them, terminating the lightly concave anterior margin of the clypeus. The area between 

 the frontal ridges is punctured in front of the inner tubercles, and smooth behind them. 



The pronotum is coarsely punctured laterally except (? always) in the neighbourhood 

 of the scars. The sides and anterior margin of the pronotum are straight, with the angles 

 between them slightly prominent. The posterior margin and angles are rounded ; the 

 latter are densely covered beneath with long yellowish hair. The marginal groove is fine ; 

 the median groove is almost complete. The posterior plate of the prosternum is broadly 

 truncate behind, being little narrower behind than in front. There are a few indistinct 

 scattered punctures on the scutellum. The mesothoracic episterna are glossy above, and 

 matt, except beside the anterior margin, below ; they are punctured except in the posterior 

 angles. The mesosternum is glossy, with deep punctured scars. The lateral areas of the 

 metasternum are narrow throughout, rugose, and very finely hairy ; a row of punctures 

 extends along the inner side of the posterior intermediate areas. The abdominal 

 sterna are polished except in the scars, which are matt. The elytra are densely and 

 somewhat extensively hairy at and below the shoulders ; their lateral grooves are 

 coarsely, their dorsal grooves more finely, punctured. 



