460 Transactions South African Philosophical Society, [vol. 



XII. 



The ampliation of the posterior part of the elytra gives to this 

 species a very distinct facies. 



Length 7-10 mm. ; width 4-5^ mm. 



Hab. Cape Colony (Cape Town, Paarl, Malmesbury, Clanwilliam, 

 Knysna). 



The shape of the genital armature of the male resembles that 

 of T. rliyparoides ; but the inner basal part of the forceps is much 

 more sinuate, and therefore much more open, and the median lobe 

 is produced into an elongate sharp process gradually attenuate and 

 projecting between the forceps for a distance equal to the whole 

 length of the latter. 



Trox (Phoberus) horridus, Fabr., 



Plate XXXIX., fig. 15. 

 Syst. Entom. Append., 1775, p. 818. 

 T. silphoicles, Thunb., Mus. Nat. Act. Ups., 1787, iii., p. 38. 



Black, opaque, and occasionally covered, especially on the pro- 

 thorax, with a squamose earthy coating ; head very rugose, clypeus 

 not acuminate, feebly emarginate at tip, lower frontal ridge uninter- 

 rupted, upper one divided into two transverse tubercles, no median 

 longitudinal carina ; antennae rufescent except the basal joint ; pro- 

 thorax strongly arcuate laterally in the anterior part, not crenulate, 

 but fringed with stiff, dense cilise, it is very rugose, the median 

 furrow is deep and has thick, rounded walls, the apical impression 

 on each side of the median furrow is not distinct, and the lateral 

 elongate tubercle is non-interrupted, and reaches from the base to 

 two-thirds of the length, the walls of the median furrow and also 

 the lateral tubercle have stiff, cylindrical bristles more or less densely 

 set; scutellum small, triangular; elytra very sloping at the shoulder, 

 rounded at a little distance from there and ampliated, the outer margin 

 has a regular series of serrate tubercles, each bearing a stiff fascicle 

 of hairs, and on each side there is in addition to the sutural part, 

 which is also fasciculate, four series of elongate, fasciculate tubercles 

 forming a serrate costa, the intervals are filled by moderately deep 

 transverse fovese divided into two by a median series of more or less 

 distinct granular tubercles ; prosternum sub-nodose ; anterior tibiae 

 with the two apical teeth divided by a very slight sinuation, the 

 basal tooth is situated above the median part and is distinct, and 

 above it and not far removed from it there is another nearly equal in 

 size, and followed by a not very pronounced serration up to the 



