OK MAMMALS FROM BILLITON. 209 



We possess a true Tragulus kanchil and a true Tragulus 

 napu both collected too in Banka by Mr. Teysmann, and 

 if kidang has the same signification as kanchil then Tra- 

 gulus napu and kanchil may be reckoned to live both in 

 Banka and Billiton , being napu in the latter locality re- 

 presented by a peculiar melanistic variety. 



Cercocebus cynamolgos Schreber. 



Observed in Billiton by Dr. Vorderman and known by 

 the indigenous under the name Kralt , exactly like in Deli , 

 Sumatra (cf. Dr. Hagen's book above mentioned , p. 80). 



Semnopithecus maurus Schreber. 



In Dr. Vorderman's collections from Billiton is an albino- 

 variety of this species. He wrote me that a colony of this 

 variety is living in the neighborhood of Gantoeng, East Bil- 

 liton , where he however could not procure a specimen , 

 but that the individual he sent to me had been presented 

 to his wife by one of his friends and that it died shortly 

 after its being in her possession. 



It is called lutong or loetong by the indigenous , exactly 

 like in Sumatra. 



I demonstrated in 1889 , Notes from the Leyden Mu- 

 seum, p. 217, that S. pruinosus Desmarest is a mere va- 

 riety of S. maurus Schreber. 



In conclusion the following Mammals are stated to inhabit 

 the island of Billiton : 

 Semnopithecus maurus (albino- Cervulus muntjac. 



variety). Tragulus napu (melanistic 



Cercocebus cynamolgos variety). 



Tarsius spectrum. Tragulus kanchil (?). 



Sciuropterus vordermanni. Tupaja javanica. 



Sciurus albiceps. Rhinolophus trifoliatus. 



» soricinus. Vesperugo vordermanni, 



» notatus. Vespertilio muricola. 



» prevostii (introduced). Emballonura semicaudata. 



Notes from the Lieydeu Museum, Vol. XIII. 



14 



