MAMMALIA. 
37 
1 w> . * more dark-coloured, but in a footnote attention is called to the fact that the plate lias 
over-coloured by the draftsman. 
mens q; '< k * n(kaess Mr. Mandelli of Darjiling, I have been enabled to examine speci- 
al no ' _ lUHa l a y ( inus from the portion of Tibet north of Sikkim. As this locality is 
Hod'«f r ^ a ^ skance f rom Northern Nepal or the adjoining districts in Tibet, whence Mr. 
probvrn 8 WGre derived > ^ may fairly be inferred that Mr. MandeUi’s specimens in all 
°t Sarf * * V lesi:mkki those originally described. The skins differ but little from those 
trifling U ' ^ arc a tittle greyer in tint and darker in the face, but the distinction is 
m ( , ;is ;-; Llul dimensions appear similar. The skull of one of Mr. Mandelli’s specimens 
p 0r tion°t ^ ^iiimetres in length by 67 in breadth, and is consequently broader in pro- 
'vliid X . ’ ^ length than the Sanju skull, of which the measurements are given below, and 
shorter* 8 ** SUre( * on Xlla. The former is also rather less high, and the nasal bones are 
differ// 1 * 1 ^ morc convc x. The skull of A. robuatm again, as figured in the “ Recherches,” 
. lI1( | . r ° ni the Siinju specimen in having a narrower frontal region and somewhat narrower 
cmui ;; 0 ^ nasals. It is probable that a larger series of these animals would show other 
distinctions, for marmots live under the most favorable conditions for producing 
'ti^tan n ° nt Vaiaet * cs ’» each colony or group of families being isolated, and frequently at a 
ever ] ,llan y miles from the next colony, so that the two, in all probability, rarely, if 
all t j l(>! | 10wl w ith each other. I am disposed to think that it is most convenient to consider 
sll()1 't- tailed Tibetan and Kuenlun marmots as varieties of the same species, 
an elov r t ’ found a marmot in the eastern mountains of Russian Turkestan above 
f rom ^j ltlon «* 4,000 feet, and at first identified the species with the A. baibacinus of Brandt 
Turkcsf 10 ^ ^d, but subsequently, in conversation with Mr. Dresser, suggested that the 
no spoof’ 1 f0nU nii S llt be A - robust us of Milne Edwards. This opinion requires confirmation, 
of /ff 1( ,1S having been compared so far as I know, but should it prove correct, the range 
In (A. robustus) must extend to the Thian Shan or its branches, 
the f ( ,|. ( , :i |. ' <Ul j u specimen of A. himalayanus, the ears are barely f inch high from the orifice ; 
rp| |, )0 ^ (palma) measures 2 5 inches without the nails; the hind-foot (planta) 3*25. 
°llowing arc the dimensions of a skull : — 
Length from occipital plane to anterior end of nasal bones 
readth across widest part of zygomatic arches 
Do. behind postorbital processes 
ength of nasal bones .... 
Breadth of do. in front . 
Do. do. behind 
tn gth of molars in upper jaw taken together 
g . °- lower jaw from angle to symphysis 
^ _ 01 ght of do. at coronoid process 
at bi,v! r tollczka mentions in his diary that Arctomys bobac (A. himalayanus ?) was seen 
1 north of the Pangong lake in Ladak. 
28. Arctomys caudatus. Pis. XIII, XIII«. 
J^quemont, Voyage dans l’Inde, iv, p. 66, PI. V.-W. Blanf, J. A. S. B., 1875, xliv, Pt. 2, P . 122. 
A Atla ms, P. Z. S., 1858, p. 521, nec Sehreher. 
’ em “chalan u «, Anderson, P. Z. S., 1871, p. 561, nec Hodgson. 
tions, b u {f m - this, the common marmot of Laddk, is included in Dr. Stoliczka s collet - 
10 had, I believe, obtained specimens in his former journey. I have already 
Met. 
Inches. 
•105 
4-18 
■066 
2-58 
•0185 
0-73 
•045 
1-76 
•018 
0-7 
•010 
0-38 
•024 
0-95 
•068 
2-7 
•048 
1-7 
