22 
SECOND YARKAND MISSION. 
but not quite touching. Nostrils rather in front. Prseocular and ocular about equal, neither 
of them as large as the nasal, anterior margin of prseocular very convex, that of ocular straig i 
and vertical, except on the top of the head, where it is curved hack. Pras frontal, postfronta , 
supraocular, and interparietal scarcely exceeding the back scales in size ; the parietals are con- 
siderably broader. Upper labials four, the first very small, in contact with the rostral anc 
fronto-nasal ; the second below the fronto-nasal and nasal, and just reaching the prseocular , 
the third between the prseocular and ocular, but not rising much on the side of the heac , 
the fourth, which is considerably the largest, beneath the ocular and extending some distance 
back beyond it. Eyes quite invisible. 
This differs from the description of T. porreclus in being rather less slender, in bavin-, 
fewer longitudinal rows of scales, and only eight instead of eleven to twelve rows rou 
the tail, and, to judge by Dr. Stolizcka’s figure, in the smaller size of the frontals, iritei 
parietals, and supraoculars. 
Family — COL UBR.ID2E. 
17. COMPSOSOMA HODGSON I. 
Gunther: Rept. Brit. Ind., p. 246; — Stoliczka: Jour. As. Soc. Bengal, 1870, xxxix, Pt. 2, p- UJ 
1, Kashmir. 
This specimen, which is young, being only 2P5 inches long, has the scales absolutely 
smooth throughout, and a second prseocular, formed of a detached portion of the sU P^ 
labial series, between the third and fourth labials. A similar specimen has been descri ^ 
by Stoliczka, loc. cit., from the North-Western Himalayas. Ventrals 227, subcaudals in 
pairs. 
18 . Ptyas mucosus. 
1, 2, Kashmir, 
These specimens do not differ from the ordinary Indian form. Kashmir must, I slu> u ^ 
think, be at the extremity of this snake’s range to the north-west. 
19. Zamenis ravergieri. 
Coluber ravergieri, Menetries : Cat. Rais., p. 69 (1832). n , 
Zamenis caudcelineatus, Gunther: Cat. Col. Snakes, Brit. Mus., p. 104 (1858); — Jan. Icon- 
livr. 23, PI. iii. 
Zamenis ravergieri, Strauch : Schlangen des Russ. Reichs, Mem. Acad. Sci. St. Pet., xxi, No- b 1 
(1873) ; — W. Blanford: Eastern Persia, ii, p. 417 (1875). 
Z. fedtschenkoi, Strauch: Schlangen des Russ. Reichs., p. 135, PI. iv (1873). 
1, Yarkand. ; 2, 3, Yangihissar. 
The spots on the head and back are larger than in Persian specimens, and s0 ^ n ^ aS 
resemble those of Z. cliadema, whilst the dark band along the upper part of the al 
haf 
a 
