igi6.] Robinson : Vertebrates of Pulau Panjang. 65 



colour is more clearlj t ufous or " vinai > ■ ms rufous." Resemb- 

 lin ■• Sc. ■: luteus in these respects but a much smaller form. 



Measurements: External measurements oi the type, taken 

 in the flesh: hi a 1 and bo ly, 185, 17'"': tail, 162, [158) : Hf., 

 1 1'5, |oi : ear, 15 mm., I r.6 



Average and extremes of ten specimens; head and body, 

 183, (170-192); tail, 160-5. (142-175); hind-foot, 42^3, 

 (40-46.5); ear, r.6, (15-18). Cranial measurements of type: 

 greatesl length. 45-8 1 4 5 " 1 : condylobasilai length, 39-1 

 (38-8): diastema, 10-4 (10-3): zygomatic breadth. 28-3 :6 - o) ! 

 median length of nasals, 1 y 3 (13*1) ; upper molar series includ- 

 ing pm 3 8-9, (8-3). 



Average and extremes often specimens: greatest length. 

 47'i. (45*6 48 5); i indylo- basilar length, 401, (38*2 42^0) ; 

 diastema, io'o 1 io'o-i i"2) ; zygomatic breadth, 28-4 (2 7'8-29.3); 

 median length of nasals. 14-0 1 ij'.i- 14'M : maxillary tooth row 

 including pm 3 , 8*9, (8*4 9-3) mm. For detailed measurement 

 see table on p. 67. 



Specimens examined. Fifteen, all from Pulau Mapor. 



RATTUS SURIFER LINGENSIS 1 Miller). 



Mus lingensis, Miller, Proc. Acad. Nat. Sci. ii, p. 266 

 (1900); id. Proc. Acid. X. it. Sri. Philadelphia, 1902, p. 154: 

 id. Proc. U.S. Nat. Mus. xxxi, p. 266 1 1906 : Lyon, op > it, xxxi, 

 p. 655 (1907); Thos. and Wrought. Journ. Fed. Malay States 

 Mus. iv, p. 125 (1909); Lyon, Proc. U.S. Nat Mus. xxxvi, p. 

 484 (1909). 



A very large series of this rat was collected on Mapor 

 which for the present we refer to this rare The colour 

 characters assigned to it as compared with E. surifer from the 



mainland h Id i I. viz.. a dull, more clay-coloured tint with 



much less ichra is orange on the flanks and a greatei ad- 

 mixture of black on the back, bul we arc unable to see that the 

 Rhio foi ni has a narrower palate as stated bj Miller. The tail 

 is perhaps, 011 an average, relatively shorter than in the main- 

 land form and the skull is somewhat more heavily built with a 

 greater development of the 1 



Tin- skull dimi n ion - even if equally adult animals from 

 the same island are compared are, as Lyon notes, variable. 

 m Karimon and Kundnr sei m to be the largest 

 and those from Bati im and Bintang on the whole dullest in 

 tint. The race i much more closely related to those inhabit- 

 in;; the is! mds 1 f tru east 1 oasl of the Peninsula than to the 

 lightly built, bright coloured animal found in Singapore. 

 Epi'mys surifer leonis (Robinson and Kloss). About fifty speci- 

 mens, adult and young, were obtained. For measurements 



See p. 68. 



* Measurements in parentheses these of the type of Sciurus vittatus 

 famulus from Pulau Dayang nr. Pulau At.r (Robinson. Ann and Mag Nat. 



