1907.] Catalogue of the Coleoptera of South Africa. 531 



Prothoracic cavity plicate in the anterior part only ; pro- 

 pygidium carinate longitudinally in the centre ; pygidium 

 with a hasal, narrow, transverse lamina upcctabihs. 



Prothoracic cavity moderately deep, foveolate punctate; 

 propygidium not carinate; hase of pygidium with the 

 upper margin transversely grooved, head not impressed . . conlicolhs. 



A". Elytra without any dorsal costa, head impressed, strigillate . . vicinns. 



B r . Prothorax obliquely incised laterally; each elytron with six 



strice ; pygidium laminate at the base incisus. 



A'. Elytra with a dorsal costa, and not strigillate. 



Prothorax with a large cavity extending from apex to base, 

 margins highly reflexed, deeply notched laterally, upper part 

 impunctate ; pygidium broadly laminate at the base, and with 

 a spine-like median process in the centre paradoxus. 



Trichoplus ljevis, Gory and Perch., 

 Monogr. d. Get., p. 115, pi. xvi., fig. 2 ; 

 Burmeist., Gen. Ins., 1848, No. 36 ; figs. 1-8 ; 

 Westw., Thesaur. Entom., p. 33, pi. ix., fig. 10. 

 Black, very shiny ; antenuse piceous red ; clypeus convex in the 

 centre, slightly impressed laterally, nearly parallel with the anterior 

 angles rounded, deeply emarginate in front, obsoletely punctate, like 

 the head which bears on the vertex a not very sharp, triangular 

 tubercle ; prothorax sub-quadrate, strongly declivous laterally in 

 front, quite depressed in the posterior part of the disk, slightly so on 

 each side of the base which is straight, of nearly equal width as the 

 apex with the angles rounded, it is covered with remote, slight, 

 found punctures bearing each a most minute hair; scutellum smooth 

 and having on each side a series of four or five punctures ; elytra as 

 broad as the prothorax, sinuate laterally, not attenuate behind, plane, 

 having on each side a distinct, sharply tectiform dorsal costa, the 

 space between the costa and the very little raised suture has a few 

 very evanescent diagonal striae, whereas the area bordering on the 

 other side of the dorsal costa is conspicuously striate diagonally from 

 there to the deflexed lateral part which is deeply punctate, as is also 

 the apical marginal part ; under side and legs impunctate, the robust 

 femora and the tibiae are strongly compressed ; ante-coxal process of 

 the presternum dilated triangularly at apex and truncate; pro- 

 pygidium carinate longitudinally in the centre ; pygidium as broad 

 as long, vertical but slightly convex in the centre, carinate, and very 

 briefly pilose. 



Length 13 mm. ; width 7 mm. 



Hab. Cape Colony (Namaqualand). 



