G34 Transactions South African Philosophical Societi/. [vol. xiii. 



tinct tufts ; prothorax almost as that of T. varicosus, the hind part is, 

 however, a little broadened, and higher, the hind angles are thence 

 more blunt and surmount a little the shoulders ; elytra at the base 

 always distinctly sinuate close to the shoulders, these very sharp, 

 almost tooth-like, the outer margin finely crenulate, with serrated 

 small tubercles equal in size, and mostly consisting of from two to 

 three adjacent little knobs having between them a single very small 

 one ; end of the presternum transverse, the fore tibiae with one tooth 

 in the middle, and toothed above the same ; first joint of antenna' 

 black and with black bristles, the club a hoary grey, the other joints 

 red- brown." 



Trox pusillus, n. sp. 



A close ally of T. rhyparlioides, Har., but smaller; the shape of 

 the clypeus and frontal part is the same but the ridges are blunter, 

 and this applies also to those of the prothorax which bear at their 

 disjuncted parts a small tuft of slightly flavescent squamose hairs, 

 the two median costules are quite parallel, and they enclose a plain 

 longitudinal raised line ; on the elytra all the costoe are inter- 

 rupted at short, equidistant spaces ending in a squamose sub- 

 flavescent tuft, whereas in T. rhyparhoides the first two costae 

 are almost entire from the apex to long past the middle, and the 

 two rows of foveae in each interval are very shallow. 



Length 6 mm. ; lat. 3 mm. 



Hab. Southern Khodesia (Salisbury). 



FAMILY GEOTRUPINiE. 



Key to tlic Genera. 



Intermediate coxae broadly separated ; pygidium not covered by the 



elytra; scutellum very narrow, elongated, sunken i thy reus. 



Intermediate coxas contiguous ; pygidium covered by the elytra ; 



scutellum broad, ogival, not sunken BolbuctTug. 



Gen. ATHYKEUS, McLeay, 

 Horai Entomolog., i., 1819, p. 123. 

 The differences separating this genus from Bolboceras are those 

 given above. As a rule the prothorax is more dehiscent, and the 



