13, PSEUDOXENODON, 271 
_ deep or deeper than long ; one preocular ; three postoculars ; tem- 
porals 2+2 ; eight upper labials, fourth and fifth entering the eye ; 
four or five lower labials in contact with the anterior chin-shields, 
which are a little shorter than the posterior. Scales more or less 
strongly keeled, in 19 rows anteriorly, in 17 on the middle of the 
body. Ventrals 158-173; anal divided; subcaudals55-75, Brown 
or olive above, with or without a dorsal series of reddish-brown or 
orange spots and a dorso-lateral series of black spots; a more or 
less distinct chevron-shaped dark marking, pointing forwards, may 
be present on the nape ; anterior part of belly with large quadran- 
gular blackish-brown spots, posterior part and lower side of the 
. tail clouded with brown. 
Total length 990 millim. ; tail 180. 
Himalayas, Khasi Hills, hills of 8.W. China and Burma, 
a. 2 (V. 164; C. 63). Nepal. B. P} Hodgson, Esq 
b-d. S (V. 173, 160; Darjeeling. T. C. Jerdon, Esq. 
C. 73, 68) & 9 (V. 165; Pepe 
C. 68). 
ef. Sd (V. 166; C.?) Darjeeling. W. T. Blanford, Esa. 
& yg. (V. 160; ©.57). (P.]. 
g. 2 (V. 172; C.?). Sikkim. Messrs. ro Schlagin- 
tweit [C.). 
h. Q (V. ca. 175; C.69). Sikkim. Sir J. Hooker [P.). 
tk. g (V. 164; C.?) & Khasi Hills. Sir J. Hooker tp 
Q (V. 167; C. 60). (Types of X. macrophthalmus-) | 
l. 2 (V.172; C. 65). Khasi Hills. T. C. Jerdon, Esq. 
m-n. . 158, 158; Kia-tiang-fu, Prov. A. E. Pratt, Esq. 
c Ae eo Chuen, 1070 feet. [C.]. = 
2. Pseudoxenodon dorsalis. (Prare XVII. fig. 2.) 
Xenodon macrophthalmus, part., Giinth, Cat. p. 53 (1858). 
Tropidonotus dorsalis, Giinth. Rept. Brit. Ind. p. 263 (1864). 
Rostral broader than deep, just visible from above; internasals 
a little shorter than the prefrontals; frontal a little longer than 
broad, as long as its distance from the end of the snout, shorter 
than the parietals ; loreal deeper than long; one pre- and two or 
three postoculars; temporals 2+2; eight upper labials, fourth and 
fifth entering the eye; four lower labials in contact with the 
anterior chin-shields, which are shorter than the posterior. Scales 
feebly keeled on the back, smooth on the sides, in 17 rows ante- 
riorly, in 15 round the middle of the body. Ventrals 140; anal 
divided ; subcaudals 51. Brownish grey above, with a dorsal series 
of pale yellowish (reddish) transverse spots; upper surface of tail 
with a yellowish, black-edged stripe ; a A-shaped blackish band on 
the nape, confluent with a more indistinct one on the back of the 
head ; a blackish band from the eye to the angle of the mouth; 
upper lip yellowish, the labials with fine black lines at the sutures ; 
