1900.] Catalogue of the Colcoptcra of South Africa. 191 



iloiible series of scabrose punctures which are very distinct ; 

 pygiclium deeply and closely punctured, and setulose ; median part 

 of metasternum deeply punctate but having a narrow, longitudinal 

 smooth space with a deeply impressed line in the centre ; anterior 

 tibite not spinose inwardly at tip, apical spur straight. 



The shape of the cephalic horn is nearly similar to that of 

 (\ viastrucatus, but it is longer in ])roportion to the general size, 

 and is more cylindrical. 



The female is unknown. ■ 



Length 7 mm. ; width 4 nun. 



I have seen only one male example, and it is quite possible that 

 the length of the cephalic horn may vary. 



Hah. Natal (Pietermaritzburg). 



Onthophagus mastrucatus, n. spec. 



Dark bronze brown, shining, very pubescent on the upper side ; 

 genas straight, projecting at apex, clypeus semicircular but projecting 

 slightly at apex, and with the edge slightly curved, frontal carina 

 arcuate, the whole head is covered with deep, rugose punctures ; 

 prothorax marginate laterally but not along the base the naedian 

 part of which is rounded, it is sub-canaliculate in the posterior dorsal 

 part, and is covered with very rough, closely set punctures, the sides 

 are almost scrobiculate, and it is clothed with a dense, erect, slightly 

 brownish pubescence ; elytra sub-oblongo-ovate, finely but deeply 

 striate, the striae geminate and slightly punctulate ; intervals with a 

 double series of deep, broad, irregular rugose punctures ; pygidium 

 roughly punctured ; metas,ternum scrobiculate laterally and deeply 

 punctured in the median part ; anterior tibiiB not spinose inwardly, 

 apical spur nearly straight. 



Male : Clypeal carina not much raised ; iDetween this carina and 

 the vertex there is a long, sub-recumbent horn sub-cylindrical from 

 the median to the apical part, reaching sometimes as far as the base 

 of the prothorax, and occasionally shorter ; the prothorax is sloping 

 in the anterior part but not abruptly, and in the centre of this 

 anterior part, which is only shghtly impressed, there is a small 

 longitudinal carina close to the apex. 



Female : Clypeal carina very w-ell defined, vertex without any 

 transverse carina, apical part of prothorax with a very small, median 

 longitudinal carina. 



Length SJ-i mm. ; w^idth 2i-2f mm. 



In some examples the sides of the elytra turn to dark reddish. 



