118 



lowing species of squirrels have hitherto been recorded: Sciurus 



. wricinus, notatus and insignis; and tue supposition is 

 allowel that in comparing it with these species its nearest ally can 

 be pointel out. As its head and body measure about 14Ö Mm., we 

 can let immediately the larger Sciurus licolor and albkeps out of con- 

 sideration, meanwhile Sciurus sor is a much smaller form tban 



our albino. Remain Sc. notatus and Sc. : tbe skull of Sc. wo- 



is surprisingly broader between the orbits than that part oi S 

 . and our albino has that part of the skull not very broad 

 but much more small like is the case in Sc. insignis. Notwithstan- 

 ding its tail is somewhat longer than usually I can not fall in sup- 

 posing that it in reality is an albino variety of Sein r . Moreover 



the Java Marnmals are very well known, so that there would be but 

 little room for the supposition that in Java is living an unknown 

 species of Squirrel and that we have here a variety of an undescribed 

 and new species! 



Mus. 



Mus zetifer Horsfield. 



Java: Buitenzorg: skin: cf ad. 



This gigantic rat is the true Tikus-urirok of the Javanese described 

 and figured by Horsfield. It perhaps may be the same species as Mus 

 bandicota Bechstein — M. malctbaricus and perchal Shaw = M. giganteus 

 Hardwicke . but aecording to Hardwicke's description and figure (Trans. 

 Linn Soc. 1804, Vol. VII, p. 307, tab. XVIII) M. giganteus tos „the 

 ..last inch of the tail naked and tüffering in colour from the rest", 

 a characteristic not mentioned in Horsfield's description of M. setifer, 

 nor to observe in the adult cf from Buitenzorg under consideration. 



Dimensions of the adult d in spirit : 



Head and body Mm. 325 



Tail 237 



Ear 29X26 



Nose to eye 32 



-e to ear 63 



Hind foot 54 



This sjiecimen has been presented to Prof. Weber by Dr. F. H. 

 Bauer from Buitenzorg. 



