Mr. W. L. Distaiit's RliT/ncIiotal Aotes. 329 



I cannot separate this species (type of the proposed 

 genus Otaris) from the genus Tricentrus. The type of 

 O. auritus is now before me, and I think that Buckton 

 must have originally described from a mutilated specimen 

 and afterwards obtained a perfect example which he marked 

 as type. I am forced to this opinion, as he writes of the 

 " posterior horn ^' as "almost obsolete/' and, again, *' the 

 posterior \iorn is blunt/' The posterior pronotal process is, 

 however, normal, slightly passing the posterior angle of the 

 inner tegminal margin, and its apex is distinctly narrowed 

 and acute. It is, however, a species very broad compared 

 with its lenoth. 



Tricentrus basuUs. 



Centrotus basalis, Walk. List Horn. ii. p. G2G (1851) ; Matsiim. Aunot. 

 Zool. .Japon. viii. p. 19 (1912). 



Hab. China; Hong Kong ; Japan. 



Triceuf rus fimlhnus. 



Centrotus finit anus, Walk. I^i.^t llom. ii. p. 628 (18ol). 

 Hab. China ; Hong Kong. 



Tricentrus caliyinosus. 



Centrotus ca/i(/inoms, Walk. Jouro. Limi. Soc. Loud., Zool. i. p. 93 

 (1857). 



Hob. JNIahicca (A. R. Wallace) ; Singapore (H. N. Ridley). 

 Siam Malay States ; Biserat {Annandule 6^ Rubinson). Malay 

 Archipelago; Bali {IV. Doherty). 



Tricentrus femoratus. 



Centrotus femoratus, Walk. Jouni. Linn. Soc. Lend., Zool. x. p. 186 



(18U8). 



Hab. Celebes ; jNIacassar [A. R. IVallace). 



Tricentrus congestus 



Centrotus congestus, \ 

 (1868). 



Hab. Sula {A. R. Wallace). 



Centrotus congestus, Walk. Juiirn. Linn. Soc. Lond., Zool. x. p. 187 

 (1868). 



