1 84 COLUBBID^. 



temporals 2 + 2; nine upper labials, fourth, fifth, and sixth 

 entering the eye ; four lower labials in contact with the anterior 

 chin-shields, which are about the same size as the posterior. Scales 

 in 17 rows. Ventrals 181; anal divided; subcaudals 112. yel- 

 lowish-olive above, with three brown longitudinal streaks on the 

 anterior part of the body ; further back, these streaks break up into 

 series of small spots and disappear towards the middle of the body ; 

 a dark brown band between the eyes and another across the occiput, 

 behind the parietals ; a whitish dark-edged streak along the upper 

 lip ; yellowish white inferiorly, throat and anterior ventrals with 

 brown dots ; a brown dot at the outer end of each ventral or sub- 

 caudal shield. 



Total length 528 millim. ; tail 171. 



Tehuantepec. 



5. Polyodontophis coUaris. (Plate XII. fig. 1.) 



Psammophis collaris, Gray, Ann. ^ Mag. N. H. (2) xii. 1853, 



p. 390. 

 Ablabes collaris, Gmith. Cat. p. 28 (1858), and Hept. Brit. Ind. 



p. 228 (1864) ; Stoliczka, Journ. As. Soc. Beng. xl. 1871, p. 430 ; 



Anders. Proc. Zool. Soo. 1871, p. 171, and An. Zool. Res. Yunnan, 



Bept. p. 810 (1879). 



sinensis, Gilnth. Ann. Sf Mag. N. H. (6) iv. 1889, p. 220. 



Polyodontophis collaris, Bouleng. Faun. Ind., Bept. p. 302 (1890). 



Rostral twice as bVoad as deep, just visible from above ; suture 

 between the internasals shorter than that between the prsefrontals ; 

 frontal longer than its distance from the end of the snout, as long 

 as or shorter than the parietals ; loreal as long as or a little longer 

 than deep ; one prceocular ; two postoculars, only the upper in 

 contact with the parietal ; temporals 1 (or 2) -f- 2 ; nine or ten 

 upper labials, fourth, fifth, and sixth entering the eye ; four lower 

 labials in contact with the anterior chin-shields, which are as long as 

 the posterior. Scales in 17 rows. Yentrals 159-190 ; anal divided ; 

 subcaudals 102-131. Brown above, vertebral region greyish, usually 

 with a series of small round black spots, or with a dark stripe ; 

 head with small black spots or vermiculations above, and two black 

 cross bands, one across the posterior part of the frontal and supra- 

 oculars, the other across the occiput ; a large black nuchal spot or 

 cross band, bordered with yellow posteriorly ; a black line from the 

 nostril to the nuchal spot, passing through the eye, bordering the 

 white black-dotted upper lip. Lower parts yellowish, each ventral 

 with an outer black spot or streak, which may be confluent on the 

 posterior part of the body ; anterior ventrals with a pair of median 

 dots in addition. 



Total length 760 millim. ; tail 235. 



Himalayas (to 10,000 feet) as far west as Simla; Assam, Aracan, 

 Upper Burma, S. China. 



a-b. cJ (V. 173; C. ?) & Khasi Hills. Sir J. Hooker [P.]. (Types.) 



' bgr. (V. 172 ; C. 102). 



