1900.] Catalogue of the Coleoptera of South Afiica. 469 



Hah. Cape Colony (Kiml)erley, Prieska, Calvinia), Southern 

 Ehodesia (Middle Limpopo), Ovampoland (Okovango Eivei% 

 Okatchero), Transvaal (Eustenburg, Lydenburg, Potchefstroom)^ 

 British Bechuanaland (Kanya). It is found also in Abyssinia, Shoa,. 

 Somaliland, Syria, and Mesopotamia. 



Trox (Omoegus) radula, Erichs., 

 Wiegm. Arch., ix., 1, 1843, p. 235. 

 T. variolosus, Fahr., Insect. Caffrar., ii., p. 378. 



This species can only be compared to very small examples of 

 T. asperulatus ; the shape and sculpture are identical, but the four 

 dorsal rov^s of tubercles on the elytra are a little more costate ; the 

 anterior tibiae are similar, the second tooth being a little rounded 

 outwardly and separated from the apical one by a strong emargina- 

 tion ; the prosternum, however, has a sharply acuminate process- 

 instead of a transverse node, and the shape of the genital armature 

 is very different ; the inner margin of the forceps is provided in the 

 centre with a sharp tooth, is strongly emarginate from there to the 

 apex where it is much incurved, the curvature being vertically trun- 

 cate at tip, the upper lobe has on each side a horizontal lamellate 

 process slightly diverging, emarginate outwardly with the outer 

 angle spinose, and sub-truncate at apex, these lamellate processes 

 cover half of the median lobe which is somewhat acuminate towards 

 the apex, where it is slightly refiexed and a little emarginate. 



Length 11-^12 J mm. ; width 7-8 mm. 



Hah. Damaraland (Otjimbingue, Walfish Bay, Northern Damara- 

 land), Ovampoland (Okovango Eiver, Omramba), Cape Colony 

 (Touw's Eiver, Prieska). 



Trox (Omorgus) damarinus, n. spec. 



So very closely allied to T. radula that the description of the one 

 almost suits the other, but the body is a little more elongate, the 

 dorsal rows of tubercles are still more costate ; the prosternal process 

 is longer and sharper, but the most distinctive character is to be found 

 in the shape of the genital armature, the forceps are broader and of 

 nearly equal width, very little sinuate outwardly, bent inwards nearly 

 at right angles at sipex where they are sub-diagonally truncate, while 

 the inner part is sharply but briefly dentate at about the middle and 

 emarginate from there to the apical incurved dentate part ; the 

 median lobe is narrow, plane at the top, a little knobby and vertically 



