102 Transactions Soutli African P]iilosoi)hical Society, [vol. xii. 



anterior declivity to the base ; elytra as broad at base as the pro- 

 thorax, a little ampliate diagonally behind the shoulders, and 

 distinctly attenuate from there towards the apex, they are mode- 

 rately plane, but the suture is raised, the sides are somewhat 

 vertical, they are finely striate with the striae sub-geminate and 

 slightly punctulate, the intervals are somewhat plane and have 

 on each side of the striae a row of short, erect bristles set close 

 to one another, the suture has also a series of bristles on each side ; 

 pygidium covered with setigerous punctures not closely set ; abdomen 

 nearly glabrous ; metasternum and legs covered with closely set 

 setigerous punctures. 



Male : Anterior tibiae with one short blunt spine underneath at 

 about the middle, one at a small distance from it and a little smaller, 

 and a third one at the point of insertion of the tarsus ; intermediate 

 femora with a distinct tooth at a short distance from the apex, 

 intermediate tibise arcuate and having a long, perpendicular spine 

 at a short distance from the knee ; trochanter of posterior legs 

 light testaceous, very long, reaching nearly to half the length of the 

 femora which are simple, slightly bent inwardly and not sharp at 

 tip ; the posterior tibiee are more accurate at tip than in the female ; 

 in the smaller development, the hind trochanter does not reach the 

 median part of the femur, but it is always distinct. 



Female : Anterior tibise with the three spines underneath smaller 

 than in the male, and at times quite rudimentary ; intermediate tibise 

 and femora as in the male, trochanter of posterior femora very slightly 

 projecting, but not produced in a spine. 

 Length 8-10 mm. ; width 4-6 mm. 



Hah. Cape Colony (Transkei, Queen's Town), Natal (Durban, 

 Frere), Transvaal (Lydenburg). 



The valves of the male armature are long, deeply emarginate laterally 

 in the middle and with the apical part long, narrowed and sharply 

 curved downwards. From a dorsal view the valves are deeply con- 

 stricted on each side at about two-thirds of the length, truncate and 

 produced at middle in a sub-horizontal, narrow forceps. 



This species resembles very much S. quaclricollis, in general 

 appearance, colour, and size of the posterior trochanters, but the 

 hind femora have no median spine. The two species can, however, 

 be easily distinguished by the very differently shaped genital arma- 

 ture. Boheman's species was described evidently from a female, 

 and it is quite possible that some of the male examples have been 

 mistaken for S. qnadricoUis = S. appendioulatus , Bohem. 



Hah. Cape Colony (Worcester, Queen's Town, Transkei), Natal 

 Durban, Frere, Maritzburg), Transvaal (Lydenburg). 



