52 
SECOND YARKAND MISSION. 
zygomatic arches when viewed from above or below are curved inwards, and the 
breadth 
across them is greatest at the origin of the zygomatic process of the squamosal, and consider- 
ably less across the malars. The upper surface of the skull is moderately convex, the froQta 
and nasal portion almost straight. The interparietal extends nearly the whole width of f ' 
skull and is pointed at both extremities, its greatest length (antero-posterior diameter) 1! j 
more than one-third its breadth. The anterior palatine foramina are large and nearly of eq ua 
breadth throughout, and they terminate posteriorly behind the line joining the anterior ex- 
tremities of the molar teeth. The posterior termination of the palate is regularly conca^’ 
skull : — 
Length from occipital plane to end of nasal bones 
Breadth across posterior termination of zygomata 
Do. of frontal region between orbits . 
Do. of interparietal ..... 
Do. of muzzle in front of infra-orbital foramen 
Length of suture between nasals 
Greatest height of skull ..... 
Length of anterior palatine foramina 
Do. of bony palate from incisors to opening of posterior nares 
Do. of pterygoid bones .... 
Do. of row of upper molars 
Breadth of palate between anterior molars 
Length of mandible from condyle to symphysis 
Height of do. to coronoid process . 
I am unable to identify this mouse with any known species. In the preliminary li^ 
Dr. Stoliczka’s collections I referred it, with great doubt, to a species very imperfectly ^ eS 
cribed by Blyth 1 under the name of M. crassipes. The description was as follows : — . 
Like the preceding (M. homourus), but with the tail rather longer than the bead and body ; length " i 
tail 3?, hind foot £ inch ; the feet particularly large and, like the tail, well furnished with coarse, short 
From Masuri. v jj 
Mns homourus 2 is said to be coloured like M. decumanus, but purer, rufescent bm 
are dimensions 
Metre. 
Inch. 
. -023 
•92 
. -012 
•48 
. -0045 
•18 
. -008 
•31 
. -004 
•17 
. -008 
•32 
. -009 
•35 
. -005 
•20 
. -0095 
■38 
. -004 
•16 
. -004 
•16 
. -003 
•11 
. -0125 
*5 
. -006 
•25 
of 
above and rufescent white below. n 
The dimensions of M. crassipes correspond fairly with those of the mouse from "W esc 
Tibet, but the main structural character of the former, the large feet, are wanting in the 
ter, and as I have received from Dr. Scully specimens of a large footed mouse obtained ^ 
Nepal, agreeing better with Blyth’s description, I consider the Tibetan species must be ^ 
tinct. There is no specimen of M. crassipes in the Indian Museum, nor, so far as I am avva 
has the type been preserved. - jj 
I regret that no figure or this species has been prepared. The peculiarities of the s v 
may be easily understood by referring to the figure of that of M. pachycercus, PL X b, $»' 
4«, 46. In A?, sublimis the zygomatic arch viewed from above or below is concave p°steri° l \^ 
instead of straight, and the opening of the posterior nares is far broader, the posterior mai» j 
of the palatines evenly rounded, and the pterygoids subparallel instead of divergent, a 
somewhat thickened. The form of the pterygoids is peculiar and characteristic. 
1 J. A. S. B., 1859, xxviii, p. 295, note. See also Jerdon, Main. Jnd., p. 204. 
2 Hodgson, Ann, and Mag, Nat. Hist., 1845, xv, p. 268. 
