74 
SECOND YARKAND MISSION. 
The skull of L. ladacensis differs entirely from those of L. roylei and L. rufescens, ^ 
appears to approach those of L. alpimis and L. ogotona} As in the last named spe cieS ’ 
the maxillary hones approach each other so as nearly, hut not quite, to isolate the front port 10 ' 1 2 
of the anterior palatine opening from the longer portion between the anterior molars. 
nasals are much narrower behind than in front, and rather convex anteriorly ; the orbits 
together, the sinciput flattened, the occipital plane low and broad, and the rows of upP el 
molar teeth considerably curved inwards in front. 
The following are dimensions of a skull : — 
Metre. Inches. 
Total length 
•048 
1-9 
Breadth across zygomatic arches ...... 
•024 
0-95 
Do. between orbits ........ 
•0035 
0-14 
Length of nasal bones ........ 
•016 
0-62 
Breadth of do. behind at posterior end of premaxillaries 
•0035 
0-14 
Do. do. in front where broadest .... 
•006 
0-24 
Longitudinal diameter of bony orbit including temporal portion . 
•014 
0-55 
Transverse diameter of do. ...... 
•0105 
0-43 
Length of 5 molars in upper jaw taken together 
•01 
0-4 
Distance from anterior molar to hinder incisor 
•012 
0-45 
Breadth of palate between last pair of molars 
•008 
0-32 
Length of palate behind palatine opening ..... 
•002 
0-08 
Length of palatine opening ...... 
•014 
0-55 
Breadth of do. behind ...... 
•004 
017 
Length of lower jaw from angle to symphysis .... 
•033 
1-29 
Height of do. ........ 
•019 
0-75 
Unfortunately Dr. Gunther has only described the external characters of the true L. cu)' z0>t 
and it is uncertain whether the skull is like that of L. laclacensis or that of L. roylei , & c '’ 
but the latter is more probable. 
To the account of the distribution of this Lagomys already quoted from Dr. Stoli° z ^ 
it is only necessary to add that it appears to be extremely common on the plateau not^ 1 j 
Ladak. It was not observed in the Indus Yalley, nor on the Pankong lake, nor is it n° tlC 
in Dr. Stoliczka’s diary before reaching Chagra, north of the Pankong lake. 
47. Lagomys aueitus. PI. VI, 8 fig. 2 ; PI. Vila, fig. 2. 
W. Blanf., J. A. S. B., 1875, xliv, Pt. 2, p. 111. 
L. superne sordide fulvus fmco-lavatus, capite humerisque rufescentibus, auriculis 
rotundatis, pilis isabellinis indutis, vellere molli, pilis basin versus nigrcscenti-pl unl ^ 
apices versus in dorso lateribusque isabellinis, fusco-terminatis, subtus albis. Long. ( i' n c 
dessicato) lota circiter 7’5, cranii 1'8, auris 1, tarsi 1' 3 poll. 
1 , skin ; 2, skeleton, with flat skin ; Lukong, on the Pankong lake. 
General colour above smoky or wood-brown ; the head, shoulders and rump rather P‘ ^ 
and more rufous ; lower parts whitish, with the dark basal portion of the hair shewing thr° l k 
1 This species is made the type of a distinct genus, Ogotona, by Gray, Ann. Mag. Nat. Hist., 1867, Ser. 3, xs, p- ’ 
characters given, entirely drawn from the skull, appear to he scarcely of generic value. 
2 See foot-note p. 71. 
