184 



COLTJBKIDJJ. 



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

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

 ohin-shielfJs, which are about the same size as the posterior. Scales 

 in 17 rows. Ventrals 181; anal divided; suhoaudals 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. PolyodontopMs coUaris. (Plate XII. fig. 1.) 



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



p. 390. 

 Ablabes coUaris, Giinth. Cat. p. 28 (1858), and Sept. Brit. Ind. 



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



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



Kept. p. 810 (1879). 



sinensis, Gunth. Ann. ^ Mag. N. H. (6) iv. 1889, p. 220. 



PolyodontopMs collaris, Bouleng. Faun. Ind., jRept. p. 302 (1890). 



Eostral twice as broad as deep, just visible from above ; suture 

 between the intemasals 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 prseocular; two postoculars, only the upper in 

 contact with the parietal ; temporals 1 (or 2) -(- 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 yeUow 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-6. d (V. 173 ; 0. ?) & KhasiHUls. SirJ, Hooker [P.]. (Types.) 

 hgr. (V. 172 ; 0. 102). ^ 



