CHECK-LIST AND KEY OF PHILIPPINE SNAKES. 257 



(P. Head moderately elongate, uot distinct from neck. 

 e'. A single anterior temporal. "Greenish or brownish olive, with more 

 or less distinct black spots or reticulated cross-bars intersected 

 by two yellow longitudinal bands, which are best marked pos- 

 teriorly." (Boulenger) Natrix stolata (Linnseus). 



Calumpit, Bulacan Province (Peters). Widely distributed, 

 from Ceylon to the Himalayas and the Malay Archipelago, 

 e^. Two anterior temporals. 



f-. Internasals shorter than prefrontals; outer row of scales feebly 

 keeled. Yellowish brown, with darker stripes and spots. Belly 

 white or yellowish, with numerous round, black dots. 



Natrix spilogaster Boie. 

 Negros (Boulenger) ; Palawan (Boulenger) ; Manila (Jan) ; 

 Albay (Peters) ; Bataan (F. Milller) ; southern Mindanao (J. 

 G. Fischer); Manila and vicinity, Polillo, Limay, Camiguin' 

 (Bureau of Science collection). Occurs in the Philippines only. 

 f. Internasals as long as praef rentals ; all scales strongly keeled. 

 Brown or greenish above, with indistinct darker cross-bars : 

 frequently with a series of light vertebral spots; yellowish 

 white below, with few or no dark dots.... Natrix chrysarga Boie. 

 Palawan (Bureau of Science collection). Common in Pa- 

 lawan, which is the only island of the Philippines in which 

 this widely distributed snake is found. Elsewhere, found in 

 the eastern Himalayas, Assam, Burma, southern China, the 

 Malay Peninsula, Sumatra, Borneo, and Java. 

 d'. Head short, very distinct from neck. 



e^. Scales in 17 rows. Dark browTi above, with a yellowish vertebra! 



stripe, and a white stripe on each side.. Natrix auriculata Giinther. 



Loquilocun, Samar (Peters) ; Mindanao (F. Miiller) ; southern 



Mindanao (J. G. Fischer); Pasananca (Challenger). Confined 



to the Philippines. 



e". Scales in 19 rows. 



f*. Subcaudals 96 to 101. Olive above, vertebral line lighter. 



Natrix crebripunetata ( Wiegmann ) . 

 Philippines (Giinther). Restricted to the Philippines. 



f-. Subcaudals 66 Natrix lineata (Peters). 



Loquilocun, Samar (Peters). Known only from the Phil- 

 ippines. 

 c'. Maxillary teeth 3.5 to 40, the posterior ones but slightly enlarged; eye 

 very large, body very .slender. Olive above, with black spots and 

 two series of yellowish spots; yellowish beneath, with numerous large 



black dots Natrix dendrophiops (Giinther). 



Zamboanga (Challenger) ; Mindanao (F. Milller) ; Agusan River 



Valley, Mindanao (Bureau of Science collection). Known only from 



the Philippines. 



6-. Maxillary teeth subequal, 20 to 35; pupil vertically elongated; snout 



pointed. The genus is Philippine exclusively Genus Oxyrhabdium. 



' Camiguin, throughout this paper, refers to the island of that name in the 

 Babuyanes, north of Luzon. 



