1g16.] Ropinson: Vertebrates of Pulaw Panjang. 65 
colour is more clearly rufous or ‘“‘ vinaceous rufous.’’ .Resemb- 
ling Sc. v. subluteus in these respects but a much smaller form. 
Measurements: External measurements of the type, taken 
in the flesh: head and body, 185, (176)’; tail, 162, (158); Hf., 
AI"5, (40); ear, 15 mm., (16'5). 
Average and extremes of ten specimens; head and body, 
183, (170-192); tail, 16075, (142-175); hind-foot, 42°3, 
(40-46.5); ear, 16, (15-18). Cranial measurements of type: 
greatest length, 45°8 (45°1)*; condylobasilar length, 3971 
(38°8) ; diastema, 10°4 (10°3); zygomatic breadth, 28°3 (26:0): 
median length of nasals, 13°3 (13°1); upper molar series includ- 
ing pm® 8:9, (8°3). 
Average and extremes of ten specimens: greatest length, 
47°I, (45°6-48°5); condylo-basilar length, 40°1, (38°2—42'0); 
diastema, 10°0 (10°0-11°2) ; zygomatic breadth, 28°4 (27°8-29.3); 
median length of nasals, 14°0 (13°3-14°8); maxillary tooth row 
including pm§8, 8:g, (8°4-9°3) mm. For detailed measurement 
see table on p. 67. 
Specimens examined. Fifteen, all from Pulau Mapor. 
RATTUS SURIFER LINGENSIS (Miller). 
Mus lingensts, Miller, Proc. Acad. Nat. Sci. u, p. 266 
(1900); id. Proc. Acad. Nat. Sci. Philadelphia, 1902, p. 154; 
id. Proc. U.S. Nat. Mus. xxxi, p. 266 (1g06) ; Lyon, op cit, 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 race. The colour 
characters assigned to it as compared with E. surifer from the 
mainland hold good, viz., a dull, more clay-coloured tint with 
much less ochraceous orange on the flanks and a greater ad- 
mixture of black on the back, but we are unable to see that the 
Rhio form has a narrower palate as stated by Miller. The tail 
is perhaps, on an average, relatively shorter than in the main- 
land form and the skull is somewhat more heavily built with a 
greater development of the ridges. 
The skull dimensions, even if equally adult animals from 
the same island are compared are, as Lyon notes, variable. 
Specimens from Karimon and Kundur seem to be the largest 
and those from Battam and Bintang on the whole dullest in 
tint. The race is much more closely related to those inhabit- 
ing the islands of the east coast of the Peninsula than to the 
lightly built, bright coloured animal found in Singapore. 
Epimys surifer leonts (Robinson and Kloss). About fifty speci- 
mens, adult and young, were obtained. For measurements 
SEE De Gls 
* Measurements in parentheses those of the type of Sciurus vittatus 
famulus from Pulau Dayang nr. Pulau Aor (Robinson. Ann. and Mag. Nat. 
Hist (8) X. p. 592 (1912). 
