306 Mr. O, Thomas on 
black dorsal lines, these lines being probably absent. at the 
opposite season. General tones of.colour similar throughout, 
but the under surface white instead of pale buffy. Subocular 
stripe also white, scarcely more buffy anteriorly ; in monti- 
colus it is pale buffy behind, strongly buffy in front. ‘Tips 
of tail-hairs whiter and less buffy, also rather longer, making 
the tail more bushy. 
Median black line running from the nape to the base of 
the tail. Lateral light stripes strong and prominent, buffy 
whitish. 
Skull as in monticolus. 
. Dimensions of the type (measured on skin) :— 
Head and body 127 mm.; tail (c.) 100; hind foot 30. 
Skull: condylo-incisive length 31:5; zygomatic breadth 
21:5; nasals 10°5; interorbital breadth 12°5; breadth of 
brain-case 17°6; palatilar length 14; upper tooth-row ex- 
clusive of p’ 6; molars only 4°3. 
flab. Yunnan. Type from the Lichiang Range, at 
27° 20'N. Alt. 11,000. 
Type. Old male. B.M. no. 20.1.16.4. Original num- 
ber 1. Collected July 1918 by Mr. George Forrest. Pre- 
sented by Col. Stephenson R. Clarke. Two specimens. 
From any of the forms of Tamiops found further west this 
Tamiops is distinguished by the complete interruption between 
the subocular and light lateral dorsal lines, this interruption 
being a characteristic of the Chinese members of the geuus, 
Tamtops tnconstans, sp. n. 
A small species with dull upper surface and bright yellow 
belly. 
Size among the smallest of the genus. General colour 
greyish olivaceous, the markings Jess conspicuous than in 
any species known to me. Fore-back and the strip internal 
to the lateral light lines, where the subdorsal dark lines 
usually are, practically concolor, pale greyish olivaceous, the 
median dark line broad but little darker than the general 
dorsal colour, and margined on each side with inconspicuous 
buffy bands. Outer light bands the only ones which are 
really distinet, and these only short and narrow, not reaching 
the subocular lines; buffy whitish. Crown rather more buffy 
than back. Orbital rings and subocular stripe strong buffy. 
Hairs of ear as usual black, but those of the chief tuft on the 
back of the ear are not only white at tip, but white to their 
bases. : 
Under surface, in marked contrast to the inconspicuously 
