53. zAocvs. 377 



3. Zaocys luzonensis. (Plate XXVI. fig. 2.) 

 Zaocys luzouensis, Gilnth. Froc. Zool. Sue. 1873, p. 109. 



Ilostral as deeji as broad, visible from above : intcrnasals shorter 

 than the pricfrontals ; frontal once and one third as long as broad, 

 as long as its distance from the endoftlie snout, a little shorter than 

 the parictals ; lorcal at least twice as long as deep ; one preeocuiar, 

 with a subocular below it ; two postoculars ; temporals 2-(-2 ; eight 

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

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

 than the posterior. Scales smooth, in 14 rows. Yentrals 205 ; 

 anal divided ; subcaudals IIU. Pale olive-brown above, tlic scales 

 edged with black ; lower parts yellow, turning to dark olive 

 posteriorly. 



Total length 2500 millim. ; tail 05U. 



Philippine Islands. ^ 



a. cT (V. 205; C. 119). Lazon. Dr. A. B. Meyer [C.]. (Type.) 



4. Zaocys carinatus. (Plate XXVIT. fig. 1.) 



C'oryphodon cariuatus, part., Gilnth. Cat. p. 112 (1858). 

 Zaocys carinatus, Gilnth. Ht^pt. Brit. Ind. p. 256 (1864). 

 Ptyas korros, part., Blanf. Froc. Zuol. Soc. 1881, p. 2:21. 



llosti'al broader than deep, visible from above ; internasals shorter 

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

 its distance from the rosti'al, a little shorter tlian the parictals ; two 

 or three loreals ; one pra^ocular, with a subocular below it ; two post- 

 oculars ; temporals "2-^-2; nine upper labials, fifth and sixth enter- 

 ing the eye ; five lower labials in contact with the anterior chin- 

 shields, which are much shorter than the posterior. Scales in 16 

 or 18 rows, two or four middle rows keeled. Ventrals 208-215 : 

 anal divided; subcaudals 110-118. lirownish olive or blackish 

 anteriorly, Avith yellowish spots or irregular cross bands, yellowish 

 or i)ale brown posteriorly with a large deep-black network ; lower 

 jtarts yellowish anteriorly, black and yellow posteriorly. 



Total length 3000 millim. ; tail 750. 



Borneo, Sumatra, Malay Peninsula. 



rt. d (V. 209; C. ?). Borneo. Sir E. Belcher [P.^. 



(Type.) 

 h. S (V. 215; C. 118). District of Deli, Su- Mr. Iverseu [C.]. 



niatra. 



c. S (V. 208 ; C. 110). Singapore. Dr. Dennys [P.I. 



d. 6 (V.208; C. 118). Perak. Dr. J. Anderson 



[P.]. 



