South African Coleopterous Fauna. 297 



maris in medio pubescentibus ; caput modice deflexum ; oculi 

 reniformes, prominuli ; palpi inaxillares articulo ultimo triangulo , 

 antennae graciles, articulo 3 duobus sequentibus simul sumtis 

 longiore, 4-7 longitudine sub-sequalibus, 3-10 obconicis, 11 

 ovato ; prothorax elytris dimidio angustior, basi fere recta, angulis 

 postice sub-acute productis ; elytra elongata, ad medium ampliata, 

 postice acuminata, supra granulosa ; pedes graciles, longi, tibiis 

 posticis sinuatis. Mas. : abdominis segmentis basalibus tribus in 

 medio tomentosis. 



Hardly different in shape from some species of Trachynotus, 

 but in the $ the three, and sometimes also the fourth, abdominal 

 segments are clothed in the centre with a brownish pubescence not 

 quite so thick or so distinct as in Psammodes ; in Trachynotus there 

 is no such pubescence. The eyes are also more prominent. 



The types of the genus are T. (Psammodes) thoreyi, Haag, and 

 T. (Clinocranion) alstoni, Per. 



TBACHYNOTIDUS MANIFESTUS. 



Niger, opacus, elytrorum sutura, carina discoidali, vittis duabus 

 rnargineque laterali rufescentibus ; caput inter antennas profunde 

 impressum, crebre minuteque granulatum ; prothorax angustus,. 

 ante medium sub-angulatim dilatatus, longitudine quarto latior, 

 crebre granulatus ; elytra elongata, humeris obliquis, ad humeros 

 prothoracis latitudine maxima fere duplo latiora, in medio ampliata 

 ubique basi duplo latiora, deinde acuminata, supra convexa, granulis 

 distinctis adspersa, carina discoidali valida, apicem haud attingente 

 in singulo praedita, sutura haud elevata, margine laterali acuta ; 

 pedes longi, graciles. Long. 17-20 mm. ; lat. 7-9-J mm. 



In shape and size this species is closely allied to T. (Clinocranion} 

 alstoni, but the granules of the prothorax and elytra are very much 

 smaller, and hardly distinct in comparison. 



Hab. Cape Colony (Namaqualand). G. Alston. 



TBACHYNOTIDUS COGNATUS. 



Niger, opacus, caput inter antennas profunde impressum, crebre, 

 minute granulatum ; prothorax longitudine fere quarto latior, ad 

 medium valde angulatim dilatatus, lateribus anticis fere rectis, 

 posticis sinuatis, supra parum convexus, intra basim leviter trans- 

 versim impressus, crebre granulatus ; elytra ut in T. manifesto, 

 carina discoidali acuta sub-ferruginea, apicem haud attingente, in 



