1892.] of the Goleoptera of South Africa. 11 



posterior ; elytra with the outer sides serrated, but little ampliated \xh 

 the middle (average width 14°'-"*- behind the humeral tubercles, 16™*™. 

 in the centre, and 15™-™' at the top of the declivity), sloping gradually 

 behind, aculeated at the apex, and covered with short setigerous 

 tubercles, leaving a broad, smooth space in the anterior part, the 

 tubercles larger and more closely set at the declivity, and the hairs 

 longer. 



Length, mandibles excluded : 33-41"^-"^' ; width, l5-18"*-°** 



Female : Coloured like the male, and punctuation of head and 

 prothorax alike ; elytra ampliated in the middle in the same proportion 

 as the male, but the fact ot its having the humeral augie only very 

 slightly dented, instead of sharp and protruding, as in the male, makes 

 it look more parallel ; it is also more convex and retuse behind, the 

 tubercles are more closely set on the outer sides, leaving a narrower 

 central smooth dorsal space. 



Length, 38-40 ; width, 16-18"-'°- 



Var. TIBIALIS. Bohem. 



Insect. Caffr. vol. 1, p. 1. 



Facies of the type-form, but generally a little more narrow ; the 

 elytra are more closely tuberculated, and there is no smooth dorsal 

 patch, although the tubercles are also smaller and not so closely set 

 along the suture; the four basal articulations of the antennas are 

 rufous, and so are the tibiae (examples from Griqualand West and the 

 Vaal River have these parts black) ; the raised line on each elytron is 

 more distinct than in the type. 



Male, length, 35-40; width, 16-18. 



Female. „ 31-38 ; „ 14-17. 

 The habitat of the type-form and of the variety differs. While 

 tuherculata seems to be restricted to the "Western part of the Colony 

 (Paarl, Montagu, Robertson, Prince Albert, Fraserburg, Beaufort West,. 

 Carnarvon, Little Namaqualand), the variety tiUalis occurs in Willow- 

 more. Port Elizabeth, Sunday River, Burghersdorp, Grriqualand West^ 

 Orange Free State, ? Transvaal, and British Bechuanaland. 



