NO. 1976. TREE8HREWS: FAMILY TUPAIID^—LYON. 165 



GeograpMc distribution. — Northern Borneo, Sarawak, Baram River, 

 Lawas Mountains,^ islands of Banka, and vSirhassen.^ See No. 2 on 

 map on page 133. 



Diagnosis. — Toes not distinctly lighter than rest of hind foot, and 

 skull with broader muzzle and palate, teeth slightly larger, general 

 coloration a clearer Isabella color, with less tendency to drab or 

 drab gray. 



Measurements. — Type: Head and body (from mounted skin) 140 mm., 

 tail (from mounted skin) 160; hind foot, 27; condylo-basal length, 

 35; zygomatic width, 20,5; width of braincase, 14.5; maxillary 

 toothrow, 14. Usual measurements of adults: Head and body, 

 135-150; tail, 160-180; hind foot, 27-28; condylo-basal length, 

 37-38; zygomatic width, 22-23; width of braincase, 14.5-15; max- 

 illary toothrow, 13-14. 



Remarks. — Jentink ^ records in the Leyden Museum a specimen of 

 Ptilocercus from Banka, a mounted skm and incomplete skull of a 

 nearly adult animal. Owing to the general similarity of the mammals 

 of Banka and Borneo, this specimen is here regarded as belonging to 

 the typical subspecies. 



Specimens examined. — Five. See table, page 166. 



PTILOCERCUS LOWII CONTINENTIS Thomas. 



1910. Ptilocercus lowi continentis Thomas, Ann. Mag. Nat. Hist., ser. 8, vol. 5, 

 May, 1910. 



Type-locality. — Vicinity of Kwala Lumpur, Selangor, Malay 

 Peninsula. 



Type-specimen. — In British Museum, Reg. No. 10.4.17.1, skin and 

 skull of an adult male, collected 10 miles from Kwala Lumpur, 

 Selangor, December 27, 1903, by a Dyak collector employed by 

 Selangor Museum; in good condition. 



Geographic distribution. — At present known from *Selangor and 

 Johore of the Malay Peninsula, DeU-Lankat region of Sumatra, and 

 Pulo Pinie of the Batu Islands off west coast of Sumatra. See No. 3 

 on map on'page 133. 



Diagnosis. — Differs from Ptilocercus lowii lowii in having more drab 

 in the colors of the upper parts, the metatarsal region of hind feet 

 brown in contrast with the lighter toes, and in the possession of a 

 somewhat narrower rostrum and palate, and slightly smaller teeth. 

 (See Plate 10, fig. 5.) 



Measureme7its.— Type: Head and body, 133 mm. ; tail, 167 ; liind foot, 

 28; condylo-basal length, 27; zygomatic width, 22.5; width of brain 

 case, 15; maxillary tooth row, 12.5. For individual measurements 

 see table, page 166. 



' See Hose, Mammals of Borneo, 1S93, p. 34. 

 2 See Thomas and Hartert, Nov. Zool., vol. 1, 1894, p. 656. 



« Cat. Mus. Hist. Nat. Pays-Bas, Osteol. Mamm. vol. 9. 1887. p. 242; Cat. Mus. Hist. Nat. Pays-Bas, 

 Mamm,. vol. 12. 1888, p. 118. 



