394 Descriptive Catalogue [1898. 



than long, well rounded on the sides and deeply sinuate after the 

 middle, lateral foveae large, median one small, longitudinal sulcus 

 entirely wanting, transverse one strong and angular, at the base two 

 large but not deep foveae ; elytra a little longer than broad, not at- 

 tenuate at base, shoulders oblique, little prominent, dentate, dorsal 

 sulcus strong, and reaching the median part ; first dorsal segment not 

 arger than the other, at the base a deep impression much narrower 

 than the third, with two very divergent carinas ; metasternum with 

 a small groove behind. 



Male : Intermediate trochanters with a strong but short and 

 blunt tooth at the base, posterior ones simple ; last ventral segment 

 very large, with a deep and large oblong groove. 



Female : Last ventral segment sinuate at apex, and the last dorsai 

 one with a small tubercle. Length 1-90-2-00 mm. 



This species is closely allied to R. microcepliala, the antennae are 

 very much alike, but the head is not so small, and is more attenuate 

 in front ; the prothorax is broader and more deeply sinuate in the 

 sides ; the size is larger, and the sexual characters are very different. 



In R. microcephala I did not at first notice the presence on the 

 posterior trochanters of a transverse, somewhat oblique, hook-like 

 carinae, which is very difficult to detect ; the intermediate ones are 

 simple ; in B. capcnsis it is just the reverse, the intermediate are 

 toothed and the posterior ones are simple. 



Hah. Cape Colony (Cape Town, Kloof Road). 



Raffbayia algoensis. 



Elongate, ferruginous, last joint of the antennae and palpi 

 testaceous, pubescence short and fine, intermixed with long hairs ; 

 head longer than broad, very little attenuated in front, between the 

 eyes two deep foveas and two deep sulci, nearly parallel, frontal 

 part depressed in the middle ; antennal tubercles transversely 

 sulcate ; the vertex is transversely raised, and close to the neck 

 there is a short carina ; antennae not clavate, first joint elongate, 

 second quadrate, third sub-triangular, fourth to tenth transverse, fifth 

 the largest, eighth the smallest, ninth and tenth about the same size, 

 eleventh hardly broader and abruptly sub-conical at tip ; prothorax 

 much broader than the head, about as long as broad, somewhat 

 sharply rounded on the sides at the middle, and sinuated behind by 

 the lateral groove, which is large, slightly attenuate in front, trans- 

 verse sulcus deep, angular at the middle, longitudinal sulcus entirely 



