72 



a blackish median line along the lower side of the tail. Length 

 of head and body 720 mm.; tail 410 mm. (Not seen by me). 

 Habitat: Sumatra. 



2. Zaocys fuscus (Gunther). 



Coryphodon ftiscHs^ Gunther, Cat. 1858, p. 112. 



Zaocys ftiscus^ Boulenger, Cat. Sn. I 1893, P- 378, pi. XXVII, fig. 2. 



Rostral more broad than deep, visible from above; inter- 

 nasals shorter than the praefrontals; frontal as long as its distance 

 from the rostral or the tip of the snout, shorter than the 

 parietals; three loreals; one praeocular; one or two small sub- 

 oculars ; two postoculars; temporals 2 + 2; nine upper labials, 

 fifth and sixth (fourth and fifth) entering the eye; five lower 



Fig. 37. Zaocys fuscus (Gthr.) X Vs- Side view of head. 



labials in contact with the anterior chin-shields; latter much 

 shorter than the posterior. Scales in 16 rows, smooth; ventrals 

 183 — 198; anal divided; subcaudals 160 — 179. 



Olive or olive-brown above, sometimes with a red, black- 

 edged vertebral line and dark oblique bars on the posterior 

 part of the body; a black lateral band posteriorly, covering 

 the outer ends of the ventrals and subcaudals. Lower surface 

 pale yellow. Length of head and body 1900 mm.; tail 1000 mm. 



