136 SNAKES OF THE PHILIPPINE ISLANDS 



much wider than supraocular; parietals longer than wide, the 

 part bending down behind eye ending in a sharp point, touching 

 only anterior postocular; posterior nasal higher than interior 

 but less broad ; loreal rectangular, twice as long as high ; 2 pre- 

 oculars, superior widely separated from frontal, scarcely visible 

 above, five or six times as large as the inferior; 2 postoculars, su- 

 perior largest; 2 elongate anterior temporals placed diagonally, 

 both touching inferior postocular ; 2 posterior temporals ; 8 upper 

 labials, fourth and fifth entering orbit (the 2 scales partially 

 fused on the left side) ; 10 lower labials, 5 touching anterior pair 

 of chin shields, which are less than two-thirds as long as poste- 

 rior ; posterior chin shields in contact for half their length, 

 touching 3 lower labials; scales with apical pits, in 16 rows 

 around neck (at a point 2 centimeters behind parietals) ; eye 

 large, its diameter equal to its distance from nostril ; a distinct 

 depression across the head in the anterior parietal region. 



Measuremeuts of Zaocys luzonensis Giintlier. 



mm. 



Total length ' 2,240 



Length of head 47 



Width of head 28 



Depth of head at eye 16 



Length of snout from eye 13 



Diameter of eye 9 



■' From field notes of Mr. McGresor. 



ZAOCYS CARINATUS Gunther 



Plate 12, figs. 2 and 4 



Coryphodon carinatiis, part., Gunther, Cat. Col. Snakes Brit. Mus. 



(1858) 112. 

 Zaocys carinatus GtJNTHER, Rept. Brit. India (1864) 256; BoulengeR, 



Cat. Snakes Brit. Mus. 1 (1893) 377, pi. 27, fig. 1; Griffin. Philip. 



Journ. Sei. § D 6 (1911) 259; Barbour, Mem. Mus. Comp. Zool. 



Harvard Coll. 44 (1912) 115. 

 Ptyas korros, part., Blanford, Proc. Zool. Soc. London ( 18S1 i 221. 



Description of species.— (From No. 1342, Bureau of Science 

 collection; collected at Iwahig, Palawan, March, 1911, by C. H. 

 Lamb.) Head elongate, distinct from neck; rostral about one 

 and one-fifth as wide as deep, narrowly visible from abo\-e, its 

 suture with nasals longer than sutures with internasals ; latter 

 wider than long, a little more than one-third the size of pre- 

 frontals and widely separated from loreal ; prefrontals about as 

 long as wide, in contact laterally with both loreals ; frontal a 

 little longer than wide, wider than supraoculars but shorter, 

 its length equal to its distance fvon) rostral; parietals longer than 

 wide, only a little longer than frontal; nostril between 2 nasals; 



