NO. 21 FIFTY-OXE NEW MALAYAN MAMMALS — MILLER 2"J 



Skull normal. 



Auditory bullae reduced in size (Telibon Island) melanopepla 



Auditory bullae normal. 



Average excess of length of tail over that of head and 

 body about 95 mm. 



Underparts approximately ochraceous-buff (Malay Pen- 

 insula from Trong to Pahang) peninsula 



Underparts approximately tawny (Penang ) penangensis 



Average excess of tail over head and body less than 70 mm. 

 Skull usually larger with particularly heavy rostrum 



(Anamba Islands) anambensis 



Skull usually smaller with weaker rostrum (Tioman 

 Island) tiotnonensis 



PETAURISTA MIMICUS, new species 



1908. Petaurista nitidula Lyon, Proc. U. S. Nat Mus., vol. 34, p. 634. Sep- 

 tember 14, 1908. (Not of Thomas.) 



Type. — Adult female (skin and skull), No. 143341, United States 

 National Museum. Collected on Pulo Rupat, eastern Sumatra. 

 March 10, 1906, by Dr. W. L. Abbott. Original No. 4695. 



Diagnosis. — Like Petaurista nitidulus of the North Natuna Islands 

 but ear slightly larger and reddish brown of upperparts somewhat 

 lighter. 



Measurements. — Type : head and body, 400 mm. ; tail, 405 ; hind 

 foot (dry) , 64 (59) ; condylobasal length of skull (teeth much worn), 

 60.4; zygomatic breadth, 42.8; interorbital constriction, 12.6; nasal, 

 18.0; diastema, 13.8; mandible, 42.4; maxillary toothrow (alveoli), 

 14.4 ; mandibular toothrow (alveoli), 11. 5. 



Specimens examined. — Four, all from Pulo Rupat. 



Remarks. — This animal, though very different from the large 

 Petaurista uitidus marchio of the Sumatran mainland, closely resem- 

 bles P. nitidulus of Bunguran. The ears in four specimens of each 

 of the small animals (measured in skin after relaxing) give the 

 following extremes (those of nitidulus in parenthesis) : height from 

 meatus, 31 to 33 (30 to 31 ) ; height from crown, 20 to 22 ( 19 to 21 ) ; 

 width, 17 to 18 (16 to 17). 



PRESBYT1S CORVUS, new species 

 Type.— Adult male (skin and skull), No. 123993, United States 

 National Museum. Collected on Pulo Terutau, west coast of Malay 

 Peninsula, November 10, 1903, by Dr. \V. L. Abbott. Original No. 

 2852. 



Diagnosis. — Like Presbytis carlo of Pulo Langkawi but darker, 



