498 Transactions South African Philosophical Society, [vol. xii. 



part of which there is a longitudinal impressed line obliterated 

 towards the base and apex ; scutellum very slightly punctate ; elytra 

 with the suture raised, and having in addition to the juxta-sutural 

 shallow striae three feebly indicated sub -striate lines on each side, 

 the whole surface is covered with very closely set, shallow punctures ; 

 abdomen setulose ; median part of metathorax somewhat lozenge- 

 shaped and impressed. 



Length 12 mm. ; width 7-7| mm. 



Hab. Southern Ehodesia (Salisbury). 



Sub-Family OKPHNIN^. 



Antennae ten-jointe'd ; buccal organs not covered by the clypeus ; 

 intermediate coxae approximate, very developed, strongly carinate 

 inwardly ; abdomen eight-jointed ; pygidium sub-triangular, partly 

 covered by the elytra ; intermediate and posterior legs with two 

 spurs. 



Key to the Genera. 



Head with a cephalic liorn ; prothorax excavate in the middle in 

 the male ; posterior legs with a spur on each side of the tarsus . . Orplinus. 



Head and prothorax simple ; spurs of the posterior tibiae set in the 

 inner angle Ocliodceus. 



Gen. OEPHNUS, McLeay, 

 Hor., Entom., i., 1819, p. 119. 



Mentum elongate, parallel, attenuate, and rounded towards the tip 

 which is very deeply and broadly emarginate ; ligula longer than the 

 mentum, bi-lobate, ciliate at tip, membranaceous; first joint of maxil- 

 lary palpi short, second longer, curved, very obliquely truncate at tip, 

 apical one sub-fusiform, blunt at tip ; maxillae massive, short, excavated 

 inwardly, external lobe short, densely ciliate, the ciliae stiff and long 

 and having on each side of the inner basal part a strong, slighth' 

 curved tooth, inner lobe short, also ciliate inwardly but less stittiy 

 and having a long tooth at apex ; last joint of maxillary palpi nearly 

 as long as the two preceding, sub-fusiform inwardly, slightly sinuose 

 outwardly and slightly truncate at tip ; mandibles strong, wide, 

 arcuate, scooped in the centre and with four strong inner teeth : 

 labrum distinct, emarginate, densely ciliate ; clypeus short, rounded 



