378 COLUBRIBJE. 



5. Zaocys fuscus. (Plate XXVII. fig. 2.) 



Coryphodon fuscus, Giinth. Cat. p. 112 (18o8). 

 ? Ilerjietodryas horneri, Jan, Elenco, p. 80 (1803). 

 Zaocys fuscus, Giinth. Rept. Brit. Ind. p. 256 (1864). 



llostral a little broader than deep, visible from above; iuternasals 

 shorter than the pra?frontals ; frontal a little longer than broad, as 

 long as its distance from the rostral or the end of the snout, a little 

 shorter than the parietals ; three loreals ; cue prteocular, with oue 

 or two small suboculars below it ; two postoculars ; temporals 2 + 2 ; 

 nine upper labials, fifth and sixth entering the eye ; live lower 

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

 shorter than the posterior. Scales smooth, in 16 rows, Ventrals 

 189-1U8 ; anal divided; subcaudals 163-165. Olive above, 

 yellowish inferiorly ; a black lateral band along the posterior part 

 of the body and along the tail, extending to the outer ends of the 

 ventral and subcaudai shields. 



Total length 2900 millim. ; tail 1000. 



Eorneo and Sumatra. 



a. J (V. 105 ; C. 1G3). Borneo. ) ..^ . 



h. Ilgr. S (V. 192 ; C. 165). Borneo. Sir E. Belchev [P.]. f ^^^P^*-^ 



c, d. d (V. 189, 198 ; C. Nias. Ilr. Sundermami [CI. 



164, ?). 



e. S (V. 195 ; C. .?}. ? Dr. Bleeker. 



6. Zaocys tenasserimensis. 



Zaocvs tenasserimensis, W. L. Sclater, Jvurn. As. Soc. Beng. Ix. 

 1891,p. 238, ph vi. fig. 3. 



Rostral as broad as deep, just visible from above ; internasals 

 shorter than the praefrontals ; frontal longer than broad, longer than 

 its distance from the end of the snout, shorter than the parietals ; 

 three loreals ; one prseocular, with a subocular below it ; two post- 

 oculars ; a single pair of long, superposed temporals ; seven or eight 

 upper labials, fourth or fifth entering the eye ; five lower labials in 

 contact with the anterior chin-shields, which are equal to the poste- 

 rior. Scales smooth, in K! rows. Ventrals 201 : anal divided ; 

 subcaudals 123. Black above, greenish olive on the head ; ante- 

 riorly with traces of a white vertebral line ; in the middle part of 

 ihe body a series of ill-defined white transverse bands bordered 

 with black posteriorly ; on the hinder part of the body the bands 

 are gradually transformed into seven longitudinal series of white 

 spots separated by a black network ; below yellowish, the outer 

 edges of the ventrals dusky, tail with a median dusky streak. 



Tenasserim. 



