197 



tooth; tliis is uot ßo in either of thc three now dcBcribed. The 

 thorax in niy single female A. tuhercuJalus is niori' ample in 

 front, more contraeted behind. tlian in fcmale A. eni])(tis. Both 

 the species are vcry rare at present and I do . not tliink it 

 possible to unite Herr Dohrns Sumatra insect with A. tvherculatns, 

 which is from Java, without evidence <hat is not likelv to be 

 forthcoming for a long time. 



Amphisternus cultratus sp. n. 



Niger, opacus, prothorace transverso, lateribus parum in- 

 crassatis, sinuatis, angulis anticis prominulis, vix aeutis; elytris 

 opacis, disperse fortiter punctatis, spina subhumerali cultroque 

 mediano. humeris carinato-elevatis, carina basali parva, niG;ris, 

 tuberculo parvo subapicali rulb. Long. 8 millirn. ,^. 



Mas, tibiis anticis denticulo aegre observato ante apiceni 

 niunitis; elytrorum apice mutieo. 



Hab. Borneo, ad montem Penrissen (Sheldon). 



Very closely resembling A. heUicosiis (of which the male 

 is not certainly known), but to be distinguished from it by the 

 more prominent almost tubercular Shoulders and the small carini- 

 form tubercule near the scutellum being black, by the form of 

 %e second spine, or pyramidal elevation, which is similar to 

 fhat of A. vomeratiis -$ and by the simple apices of the elytra, 

 which are in no way truncate nor mucronate. One example, 

 taken by Mr. Sheldon, of the Sarawak Museum. 



Amphisternus vomeratus sp. u. 



Niger, oj)acus, prothorace transverso, niarginibus lateralibus 

 incrassatis et reflexis, angulis anticis obtusis, parum prominentibus; 

 elytris opacis, obsolete punetatis; cultra grossa mediana (aeque- 

 punctata) longitudinaliter compressa et singulis maculis tribus 

 sanguineis, una basali, una subhumerali tuberculifornii, nna sub- 

 apicali transversa in medio constricta sanguineis. 



Mas? CuUra, mediano inagis elevato, aj)ic(' rccurvata. 



Hab. Soekaranda. 



Stett. entomol. Zeit. 1901. 



