The Carabid genus Pheropsophus. 197 



front and hind borders of the thorax. It must be asso- 

 ciated with P. senegalensis, although its markings are of 

 a much simpler type and connect it rather with P. dux 

 and raffrayi, of Chaudoir. The latter have no humeral 

 spot as in the new species, but P. raffrayi resembles it 

 also in the pale colour of the elytral decoration. In shape 

 and size P. pallidepunctatus is very similar to the next 

 species. 



P. gracilis, sp. n, (Plate IX, fig. 6.) 



Apterus, testaceus, capite prothoraceque immaculatis, elytris nigris, 

 opacis, puncto humerali acute producto, macula media plus minnsve 

 rotundata marginibusque laterali et apicali (ad suturam perspicue 

 dilatata) flavis : corpore subtus cum pedibus pallide testaceis, meso- 

 sterni latere abdomineque nigris, genubus leviter nigro-maculatis ; 

 prothorace paulo elongato, antice parum rotundato, postice valde 

 angustato, angulis fere acutis; elytris brevibus, humeris vix evident- 

 ibus, lateribus regulariter curvato ampliatis, postice paulo arcuate 

 truncatis, costis valde elevatis. Long. 13*5-15 m.m. 



Hah. E. Africa, Lamu I. 



This pretty little beetle is intermediate between the 

 species just described and P. senegalensis, Dej., but most 

 nearly related to the latter. It has almost exactly the 

 size and shape of that insect, but is characterized by a 

 rather less development of the yellow pigment. The 

 scutellum, which is normally yellow in P. senegalensis; is 

 dark in the new species, the humeral spot is narrower and 

 more angulated behind, and the median patch is reduced 

 to a large disconnected spot of almost regularly rounded 

 outline. The apical border is narrow, turning inwards at 

 the suture, but with a hardly broken outline, and the 

 curvature of the extremity of the elytra is very slight. 

 The black upon the knees is another slight differential 

 character. 



Pheropsophus nigriventris, Chaud. (P. sansibaricus, Har.), 

 is very near this species, but in it the elytral spot is more 

 irregular in outline and united to the yellow margin. 



P. livingstoni, sp. n. (Plate IX, fig. 9.) 



P. capensi multo affinis sed scutello testaceo, costis latioribus 

 elytrornmque margine distincta apice recte deniarcata. Rufo- 

 testaceus, abdomine elytrisque nigris, his macula media angulata 



