1900.] Catalogue of the Colcoptcra of South Africa. o'21 



B'. Prothorax not excavated in front in the male. 



Clypens not dentate; head with a frontal tuherclc ; pygi- 



diuni in the female excavate under the ridge capicola. 



Clypeus bi-dcntate ; head with a conical cephalic horn in 



the male cUvcrsa. 



A". Anterior tibite with only one basal serrate tooth. 



Clypeus bi-dentate ; head without frontal tubercle ; pygidium 



in the female simple fraruhdcnta. 



Clypeus not dentate; head without frontal tubercle; pygidium |nirm. 

 .simple in the female, and entirely punctured in both sexes . . J deccptor. 



Pentodontoschema ARIES, Fabi'., 

 Plate XL., fig. .i^ 1^. 

 Mantiss. Insect, i., p. 7, nr. 49. 



Chestnut-brown, seldom piceous red, and then only so on the head 

 and prothorax; head very coarsely rugose on the posterior part, 

 much less so on the clypeus which is sharply acuminate laterally, 

 truncate at tip and sharply bi-dentate, there is no clypeal carina, 

 but instead a median sharp tooth in both sexes, longer, sharper, and 

 slightly curving backwards in the male ; prothorax distinctly rounded 

 laterally from the anterior part to the middle, and not much attenuated 

 in front, sub-parallel from the median part to a short distance from 

 the posterior angle, and slightly attenuate there, but more so in the 

 male, base very distinctly sinuate on each side of the median part, 

 it is convex, and has a very broad, semicircular, deep impression in 

 the anterior part in the male, and is quite simple in the female, and 

 is covered with not closely set and not deep round punctures wdiich 

 in the anterior part become transverse, and are very much more 

 closely set ; scutellum ogival, and having a not very distinct longi- 

 tudinal line ; elytra a little broader than the prothorax, distinctly 

 sinuate laterally near the median part, and a little more ampliate 

 beyond the sinuation than near the humeral part ; the strige are 

 hardly impressed and are formed by a series of shallow^ round punc- 

 tures, the juxta-sutural stria, which is also punctate, being the only 

 one impressed, and the alternate intervals, which are wide, have 

 several irregular rows of punctures as deep as those in the striae, but 

 not reaching the base ; pygidium of male smooth with the lateral 

 angles of the base closely shagreened, and a few scattered punctures 

 along the base in the female the space under the median transverse 

 carina overhanging the narrow, transverse shallow excavation is flat 



