260 Transactions South African Fhilosophical Society, [vol. xii. 



with short granules behind and scabrose punctures in front, declivous 

 in the anterior part which is deeply excavate in the middle with the 

 upper ridge carinate for more than half the length, and sinuate in the 

 centre so as to form two small tubercles ; elytra a little ampliate 

 laterally towards the middle, and attenuate from there towards the 

 apex, striate with the intervals plane and filled with closely set, very 

 briefly setigerous punctures ; pygidium not closely punctured ; meta- 

 sternum closely punctured in the anterior part on each side of the 

 median carina, but at middle and at base the punctures are irregularly 

 and widely scattered. 



Length 18-23 mm. ; width 12-13 mm. 



The only difference between the male and the female is that in 

 the latter the clypeus is sHghtly more acuminate than in the former. 



Hab. Southern Ehodesia (Salisbury). 



Gen. PHALOPS, Erichs , 



Naturgesch. d. Insekt. Deutschl. Coleopt., iii., 1848, p. 764. 



Lansberge, Stett. Entom. Zeit., 1883, p. 161. 



Mentum more or less deeply emarginate at apex, attenuate laterally 

 towards tip ; basal joint of labial palpi shorter than the second, and 

 not curved, second joint truncate, occasionally there is a very short, 

 subulate third joint ; maxillary palpi as in Onthophagus ; clypeus of 

 male recurved, rounded or slightly aculeate in the female ; prothorax 

 marginate all round ; elytra with eight striae on each side, the supra- 

 marginal one reaching from about the median part to the apex ; 

 anterior tibige of male produced inwardly in a short mucro, apical 

 spur short, and not pointing downward ; joints of posterior tibia.' 

 compressed, dilated, second, third, and fourth somewhat cordiform, 

 broader than long, apical joint sometimes as broad as the two pre- 

 ceding ones. 



The real distinctive character of this genus is the presence of an 

 ei'dith stria on each elytron, this stria, however, is not entire. The 

 characters derived from the dilatation and shortness of the joints of 

 the posterior tarsi, or from the mucro being formed by the inner angle 

 of the anterior tarsi in the male are also found in other species of 

 Onthopliagus. Yet the species included in the genus form a very 

 homogeneous group, and with the exception of three which inhabit 

 the East Indies, are found in tropical Africa, Senegal, Nigeria, 

 Angola, Abyssinia, Somahland, the Galla country and Central 

 Africa. 



