ZAOCYS. 135 



oculars ; temporals 2 + 2 ; 7 upper labials, third and fourth 

 entering the eye; 3 or 4 lower labials in contact with the anterior 

 chin-shields. Scales in 15 rows. Ventrals 225-244; anal entire ; 

 subcaudals 93-107. Pale brownish above, with a dorsal series of 

 large brown transverse spots, and, on each side, a series of small 



Fig. 45. — Bryocalamus suhannulatus. 

 Head and anterior part of body of type specimen. (After Sordelli.) 



spots alternating with the dorsals ; a brown band across the proe- 

 froutals, another between the eyes, and a large brown blotch on 

 the parietals ; yellowish beneath. 



Total length 295 millim. ; tail 170. 



Malay Peninsula (Penang, Prov. Wellesley, Singapore), and 

 Sumatra. 



Genus ZAOCYS. 

 Cope, Proc. Ac. Philad. 1860, p. 563. 



Maxillary teeth 20 to 33, increasing in size posteriorly ; mandi- 

 bular teeth subequal. Head elongate, distinct from neck ; eye 

 large, with round pupil ; a subocular below the praeocular. Body 

 elongate, a little compressed ; scales smooth or keeled, with apical 

 pits, in 16 or 18 (or 14) rows ; ventrals rounded. Tail long • 

 subcaudals in two rows. ■ 



South-Eastern Asia.' 



Two species are known from the Malay Peninsula : — 



Two or four median rows of scales keeled ; sub- 

 caudals 110-118 Z. carinatus, p. 13o. 



Scales all smooth ; subcaudals 160-165 Z.fuscus, p. 136. 



Like the Eat-siiakes these large snakes are sometimes mistaken 

 for the Hamadryad, Naia hungarus. 



142. Zaocys carinatus. 



Coryphodon carhudus, Giinth. Cat. Col. Sn. p. 112 (1858). 

 Zaocys carinatus, Giiuth. Rept. Brit. lud. p. 256 (1864) ; Bouleng-, 

 Cat. Sn. i, p. 377, pi. x.wii, fig. 1 (1893). 



Rostral broader than deep, visible from above; internasals shorter 

 than the proefrontals ; frontal a little longer than broad, as long as 

 its distance from the rostral, a little shorter than the parietals ; 



