NEW rillLIPPINE MAMMALS— MEARNS. 



441 



being a tendency to the development of extra tubercles or enamel 

 loops on the outer ])()rder of both upper and lowei' molars; ])ut these 

 subsidiary supernumerary cusps hiciv uniformity, and are frequently 

 wanting; audital bulhe prominent, indented externally. 



Cranial iiteaxiiremadK of llie typf, an adult male, fruiii Mindanao. 



Measurement. 



No. 125258, 



U.S.N.M., 



type. 



Basilar lensth (Hensel) 



( )('i'ipit(>iiasal length 



Interparietal l)readth (from outer edge of beaded upper margins) 



Length of internasal suture 



Greatest breadth of rostrum 



Length of upper molar series 



45 

 54 

 16 

 20 

 9.8 

 10.2 



External measurements of nine specimens from Mount Apo, southern Mindanao. 



Remarl:~-X female, Cat. No. 125^263, U.S.N.M., contained 2 

 foetuses, July 9, 1904; another, 2 large foeluses, July 3. 



SiJecimens examined. — Eighteen, 17 skins with skulls and 1 in 

 alcohol, all from Mount Apo, at 6,750 to 7,900 feet altitude, June 26 

 to July 9, 1904. Their stomachs were usually filled with fruit, largely 

 mixed with insects. 



MUS MAGNIROSTRIS, new species. 

 PHILirPINE GRAY RAT. 



AJnii-hougl/ (INIoros of Zamboaiifja ) . 



Tf/jh.—Adn\t female (skin and skull). Cat. No. 125212, U.S.N.M. 

 Collected at Zamboanga (old Spanish hospital), western Mindanao, 

 Philippin.^ Islands, January 15, 1904, hy Edgar A. Mearns. (Original 

 number, 5639.) 



GTiaTacters. — A member of the mrrvegicus group, r(\senibling Mas 

 norvegicusYiVxXohQw in general external appearance, ])ut with a longer 



