1863.] Proceedings of the Asiatic Society. 89 
passing obliquely backward so as to cross the angle of the gape. 
Scute 138; scutelle 86 pairs; row of scales 19. (Length of adult 
2 ft. 103 in., of which tail 10} in.) 
V. W. Theobald, Hsq., Jun., of the Indian Geological Survey. A 
small tin of specimens, containing— 
Of mammalia, askin of Lacomys Rovutt, Ogilby, from the Bala 
Pass, “inhabiting also other passes in Tibet,’”—and a small Arvico- 
line quadruped, for which I find it necessary to establish a new genus. 
PHAtomys, nobis, ”. g. Similar to Avvicola, but more robust, with 
a well developed thumb and nail to the fore-foot ; tail shortish, and 
densely clad with short adpressed hairs. Upper rodent tusks incon- 
spicuously grooved. 
PH. LEUCURUS, nobis, 2. s. Length of a female containing six fetus, 
64 in. of which tail 4 in. of a smaller specimen sent, 44 in., of which 
tail 1; in., of hind-foot claws % in. Fur dense, very soft and 
fine, the surface hue greyish-brown on the upper parts; on the lower 
parts, feet and tail, white, a little sullied: basal two-thirds or more 
of the upper fur dark slaty. “ Hars rounded, of medium size, rather 
appressed.” 
“These Rats,” remarks Mr. Theobald, “are very numerous near 
Lake Chomoriri; but can only be shot, as it is next to impossible to 
dig them ont, their holes ramifying over acres of ground. They 
must migrate, as the whole ground is sheeted in snow for five months. 
The pregnant female was obtained on the 4th August. 
(in Afghanistan, there is an animal of nearly similar habits which 
was known to our people as the ‘ Quetta Mole,’ MYospaLax FUSCOCA- 
PILLUS, nobis, J. A. . XV, 141; but that is more nearly akin to the 
true Lemmings.) 
From the same locality, Mr. Theobald has sent two males and a 
female of “a Viviparous Lizard,” with also an example of the young. 
It is a PHRYNOCEPHALUS with non-prehensile tail, and would seem 
to be nearly affined to Por. ocrLnatuUs (Licht), and Por. MELANv- 
Rus, Hichwild, briefly noticed by M. M. Dumeril and Bibron (Hist. 
Rept. 1V, 516. It is perhaps PH Tickenui, Gunther (?) noticed 
in P. Z. §. 1860, pp. 167, 173, as inhabiting from 15,200 to 15,309 
ft. elevation on the Himalaya. The sexes differ so much that they 
might well be mistaken for separate species ; the female being smaller, 
and coloured very much like Uromastyx Harpwicxktt, but the tail 
