112 SNAKES OF THE PHILIPPINE ISLANDS 



Cerberus cinereus Cantor, Pioc. Zool. Soc. London (1839) 54; 



Geay, Cat. Vip. Snakes (1849) 64. 

 Cerberus acutus Gray, Cat. Vip. Snakes (1849) 65. 

 Cerberus unicolor Gray, Cat. Vip. Snakes (1849) 65. 

 . Cerberus boseformis Peters, Men. Berl. Ak. (1861) 687. 

 Homalopsis bomformis jAN, Elenco Sist. Ofid. (1863) 77. 

 Hurria rynchops Stejneger, Bull. U. S. Nat. Mus. 58 (1907) 304. 

 Hurria rynchops Griffin, Philip. .Journ. Sci. § A 4 (1909) 599; 



§ D 5 (1910) 213; § D 6 (1911) 263; Taylor, Philip. Journ. Sci. 



§ D 12 (1917) 364. 



Description of species. — (From No. 663, E. H. Taylor col- 

 lection ; collected at Hinigaran, Occidental Negros, February- 

 ID, 1914, by E. H. Taylor.) (Adult female.) Rostral pentago- 

 nal, wider than high ; a pair of large, irregular nasals im- 

 mediately behind rostral and separating it from internasals; 

 nostrils half-moon-shaped provided with valves, situated near 

 back p,art of nasal scales, with a small suture running down to 

 edge of each scale and partly dividing it; 2 small triangular 

 internasals, somewhat unequal, followed by prefrontals, latter 

 twice the size of internasals ; frontal hro\<i<^.n into 2 large and 

 several small scales ; parietals broken into nu. erous small scales; 

 preocular elongate and fused below eye with second postocular, 

 separating labials from eye; loreal lozenge-Sviaped, touching in- 

 ternasal; temporals not distinguishable from parietals or body 

 scales; 11 supralabials, vertically elongate, seventh, eighth, and 

 sixth largest in the order named, first very much elongate, sep- 

 arating second labial from nasal ; on the right side first labial 

 is broken into two parts ; above last 3 labials is a much enlarged 

 scale ; mental narrow, triangular ; 12 lower labials, seventh, sixth, 

 and fifth largest in the order named ; last lower labials are very 

 small and scarcely differentiated ; 4 labials touching first pair 

 of chin shields ; second pair of chin shields almost entirely be- 

 tween first pair and labials ; 25 scale rows, all strongly keeled 

 except the 3 outer ; ventrals, 156 ; anal divided ; subcaudals, 66 

 pairs ; head slender, with neck slightly constricted ; body short 

 and thick, more than twice as wide as head in its widest part; 

 all the scales show very fine but distinct striations ; scales on 

 head imbricate. 



C'o/or ill life. — Above drab to ashy gray, with about fifty nar- 

 row, irregular, broken bars across body, not reaching ventrals 

 laterally; an indistinct light stripe running from snout across 

 upper labials, following the three outer scale rows, and not 

 crossed by dark bars ; lower and upper labials with dusky spots ; 

 dark stripe begins behind eye and continues to some distance 



