A Bevision of the Genus Synthocus. 93 



broad greyish white stripe on each side extending from the apex of 

 the thorax to the dechvity, in the middle of the elytra a large black 

 patch shaped like an arrow-head, the space in front of it light brown 

 and behind it dark brown. The type, however, has the entire disk 

 nearly black except for a transverse pale band at the summit of the 

 declivity. Setae very stout, short and erect, very dense on the head 

 and rostrum, and arranged in distant rows on the thorax and elytra. 

 Prothorax half as long again as broad, the sides subparallel, slightly 

 bisinuate at base, the dorsal anterior lobe deeply emarginate in the 

 middle and bearing two short cristate ridges ; upper surface rugosely 

 punctured, and with three shallow sulci, the dorsal margins carinate, 

 the carinas being continued to the apex of the ocular lobes and there 

 denticulate. Elytra subtriangular, the basal margin slightly 

 sinuate and not broader than the base of the prothorax, without any 

 trace of shoulders, the sides straight and rapidly diverging from the 

 base to the declivity, which is very abrupt and nearly perpendicular ; 

 upper surface almost plane as far as interval 6, but more or less 

 deeply impressed in the middle, with regular rows of transverse 

 foveas (almost hidden by the scaling in perfect specimens), the 

 intervals narrow, 3, 4 and 5 subcarinate, 6 with a row of small sharp 

 tubercles continued to the apex, and a transverse row of similar 

 tubercles across the summit of the declivity. Legs stout, with dense 

 brown scaling and stiff short setae ; tibiae rather scabrous, the 

 external apical angle strongly produced ; tarsi short and thick. 



Cape Colony: Cape Town (L. Peringuey), Touw's Eiver (B. M. 

 Lightfoot). Namaqualand : Bitterfontein {L. Peringuey and G. 

 Alston). 



Type in the Oxford Museum ; type of paradoxus in the S. African 

 Museum. 



A very remarkable and isolated species. 



2. Synthocus teuncatus. Boh. 



S. truncatus, Boh., Schh. Gen. Cure, vi., 2, p. 410 (1842). 



Bhytirhinus informis, Chev., Gu^r. E6gne Anim., p. 143, pi. 37, f. 8 

 (1844). 



Long. 7f-10f ; lat. (at the shoulders) 5-7 mm. 



Colour very variable; elytra brown or reddish above, usually with 

 a short velvet-black elongate spot in the middle of the suture, an ill- 

 defined lateral black patch which sometimes invades the disk, and 

 the upper half of the declivity black ; the inflexed margins and the 

 apex with dense grey scaling. 



Prothorax longer than its width at base, broadest at middle and 

 there obtusely angulated, narrowed towards the base and shallowly 



