A Bevision of the Genus Synthocus. Ill 



to the apex and on the declivity running quite close to the suture 

 and parallel with it, the dorsal margin also with a crenelated carina 

 from the shoulder to the apex, and at the base of each elytron two 

 short oblique calluses, one on each side of the dorsal carina ; the 

 spaces between the carinas are depressed and with obsolete irregular 

 punctures. Legs black, bare and with sparse dark setae ; the inner 

 angle of tibiae with a rather long straight spur ; tarsi moderately 

 long and stout. 



Cape Colony (probably). 



Type in the South African Museum. 



The unique type of this distinct species is without a locality label. 

 It may be readily distinguished from all its congeners by the 

 continuation of the high dorsal carina right up to the apex. 



5. Brotheus pusio, Wied. 



Brachycerus pusio, Wied., Zool. Mag., ii., 1, p. 113 (1823). 



Long. 4 mm. 



" Fuscous black, with grey indumentum, thorax and elytra quad- 

 rate, the former with a red tubercle on each side, the latter with an 

 elevated line. 



" Belongs to the group of B. amplexicoUis and quadratus (Germar 

 Mag., iv., p. 163). Antennce as in those species; head hanging down 

 perpendicularly ; eyes hidden by the lateral lobes of the prothorax. 

 Rostrum separated from the head by a depressed W-shaped carina. 

 Prothorax equilaterally quadrate, very slightly narrowed in front, 

 with perpendicular sides ; the dorsal margin with a posterior longi- 

 tudinal elevation of an almost vermilion colour ; upper surface with 

 a shallow transverse impression near apex. Elytra equilaterally 

 quadrate, twice as broad as the prothorax, almost perpendicular at 

 the apex and inflexed at the sides ; each elytron with a grey carina 

 lying rather nearer to the suture than to the dorsal margin, com- 

 mencing at the declivity it curves slightly inwards, then bends 

 outwards at a very sharp angle and so runs on to the shoulder ; the 

 elytra also, both dorsally and laterally, bear rows of deep closely 

 placed transverse punctures (Querstrichelchen), in which the grey 

 scaling is longer. Legs with grey scaling. 



'* Cape op Good Hope." 



Type missing ; in coll. Wiedemann. 



The above description has been translated from Wiedemann, for I 

 have been unable to identify the species. The insect is specially 

 distinguishable on account of the unusual shape of the elytral carina, 

 in conjunction with the red patches on the thorax and the grey 

 scaling of the elytra. 



