THE PROBOSCIS-MONKEY FROM BORNEO. 113 



NOTE XVI. 

 THE PROBOSCIS-MONKEY FROM BORNEO 



BY 



Dr. P. A. JENTINK. 



February 1902. 



(With 5 Plates). 



The other day I have been struck by the following 

 phrase in a paper by Dr. G. Brandes, entitled: »Ueberdie 

 Nasenaffen", Zeitschrift fur Natur wissenschaften, 1901, p. 

 284: »Es ist wohl zweifellos, dass der tibetanische und der 

 »bornesische Nasenaffe zu einer Gattung zu vereinigen sind, 

 »als deren wesentliche Charactere die machtige Entwick- 

 »lung der Nasenmuskulatur und die schwach ausgebildeten 

 »oder gar ganz fehlenden Nasenbeine zu geiten haben. Ich 

 »werde danach von Rhinopithecus nasicus (Borneo) und 

 •» roxellanae (Tibet) sprechen". 



For reasons hereafter to explain the named monkeys 

 cannot be united under the same generic title. We however 

 will admit for a moment j>they can", than may be asked 

 why Dr. Brandes did not accept the generic name ^Nasalis", 

 having a priority of about sixty years over ^Rhinopithecus^' \ 

 Further may be asked why he excluded another Rhinopi- 

 thecus, Rh. Bieti? The latter has been described and per- 

 fectly figured by A. Milne Edwards in » Bulletin du Muséum 

 d'Histoire naturelle, 1897" and »Nouvelles Archives du 

 Muséum d'Histoire naturelle, 1898", as une nouvelle espke 

 du genre » Rhinopithecus^ \ known as the •» Singe des neiges*^ 

 ou » Tchru tchra'^ by the inhabitants; it has been procured 



Notes from the Leyden IMiiseiim ^'ol. XXIII. 



