8 Transactions South African Philosophical Society [vol. xii. 



upper lobe of maxillas very narrow and fasciculate ; mandibles 

 parallel, long or short according to the sexes, obliquely raised, eyes 

 incised by the canthus for about four-fifths of the length ; basal 

 joint of antennae shorter than all the others, the two penultimate 

 ones are straight and form the club the apical joint of which 

 is swollen and rounded inwardly and at tip ; prothorax sub-parallel 

 or slightly attenuate in front laterally ; scutellum short, rounded at 

 apex ; elytra cylindrical ; legs moderately short ; anterior tibiae 

 denticulate from the elbow to the apex, posterior ones bi-spinose 

 outwardly, tri- digitate at apex and with the tarsi hardly shorter than 

 the tibiae ; prosternum with a sharp triangular intercoxal projection ; 

 suture of the mesosternum and metasternum quite obliterated be- 

 tween the intermediate coxae. 



This genus is represented in South Africa only. 



XiPHODONTUS ANTILOPE, Westw., 



Plate XXXI., fig. 4. 

 Entom. Magaz., v. p. 260. 



X. cctpensis, Sturm,, Catal., p. 347, pi. iv., fig. 3. 



X. reichei, Cast., Hist. Natur., ii., p. 175, pi. xvii., figs. 1-8. 



Black, moderately shining, and with the palpi and tarsi piceous 

 red. 



Male : Head deeply excavate in the centre ; mandibles three times 

 the length of the head, rising sub-obliquely, parallel, compressed, a 

 little concave inwardly and deeply incised at tip, the incision forming 

 two unequal teeth the upper of which is longer and rounded ; at the 

 base of the mandibles there is also a small marginal inner tooth ; 

 prothorax one-third longer than broad, sub-parallel, deeply excavate 

 in front and with the median part produced into a sub-horizontal lobe 

 tri-dentate at tip, the median tooth being a little below the line of the 

 other two and projecting above the anterior declivity ; it is slightly 

 impressed on the discoidal part ; on each side of the median lobe 

 there is a deep and broad longitudinal furrow reaching from the base 

 to not far from the apex of the lobe, and also a small supra-basal 

 shallow elongate impression on each side of the median groove ; the 

 whole surface is covered with round, deep, equally distant punc- 

 tures ; elytra covered from apex to base with sharp narrow costae 

 made sinuose by being fossulate, partly laterally, partly in the 

 middle ; intervals very narrow, rugulose, opaque while the costaB 

 are shiny ; abdomen covered with foveolate punctures ; meta- 



