or the tip of the snout, shorter than the parietals; loreal long; 

 one prae- and two postoculars; temporals 2 + 2 or I + 2; nine 

 upper labials, fifth and sixth entering the eye; five lower 

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

 than the posterior. Scales in 13 rows; ventrals 185 193; anal 

 divided; subcaudals 114 121. 



Olive above, with black-edged scales; an indistinct dark 

 streak on each side of the head, passing through the eye; 

 upper lip yellow. Lower surface pale green, the posterior 

 ventrals and the subcaudals margined with black; head yellow 

 below. Length of head and body 805 mm.; tail 315 mm. 



Type-specimens examined in the British Museum. 



Habitat: Ternate!; Halmahera!; Batjan. 



13. Zaocys Cope. 



(COPE, Proc. Ac. Philad. p. 563, 1860). 



Head long, distinct from neck; eye large ; pupil round. Maxil- 

 lary teeth 20 33, increasing in size posteriorly; mandibular 

 teeth about equal. Body long, slightly compressed, covered 

 with smooth or keeled scales with pits, in 12, 14, 16 or 18 

 rows; ventrals rounded. Tail long; subcaudals in two rows. 



Distribution. S. E. Asia. 



Key to the Indo-Aust ralian species. 



A. A single loreal 5 scales in 12 rows I. Z. tornieri p. 71. 



B. Two or three loreals; scales in 16 or 18 rows. 



I. Scales smooth; subcaudals 160 179 2. Z. fuscus p. 72. 



II. Scales of two or four median rows keeled 5 subcaudals 



no 118 3. Z. carinatus p. 73. 



i. Zaocys tornieri Werner. 



Zaocys tornieri, Werner, Verh. Ges. Wien XLVI 1896, p. 15, Taf. I, fig. I. 



Rostral twice as broad as deep; internasals as long as the 

 praefrontals; frontal as long as its distance from the tip of the 

 snout, a little shorter than the parietals; loreal more long 

 than deep; no subocular; two postoculars; temporals i + i; 

 nine upper labials, fifth and sixth entering the eye. Scales in 

 12 rows, two middle rows strongly keeled as far as the base 

 of the tail; ventrals 146; anal divided; subcaudals 131. 



Brown above; sides of head yellowish. Lower surface greenish; 



