112 BARBOUR: ZOOGEOGRAPHY. 



we know from Celebes a specimen described by Giinther (Proc. Zool. soc. London, 

 1873, p. 170) as Tropidonotus manadensis, which had an unusual formula, V. 139, 

 C. 76. This is certainly not specifically distinct from N. subminiata, but more 

 material might establish a race in Celebes, as also others in Malaya and Siam, 

 as well as China and India. The limited material now available makes the nam- 

 ing of these forms at present unwise. 



One Buitenzorg specimen combines unusual variations, — the presence 

 of two preoculars and seven supralabials, of which the third and fourth only 

 enter the orbit. 



Since writing the above statement I have received from the Indian museum, 

 thanks to Dr. Nelson Annandale, two specimens of this species; one from 

 Samagooting, Assam, with a count of V. 172, C. 83; and another from the North- 

 ern Shan States of Burma, with a count of V. 166, C. 81. The latter snake is 

 twice as large as the largest Javan individual I have seen. 



Natrix chrysarga (Schi-egel). 



ScHLEGEL, Essai phys. Serp., 1837, 2, p. 312, pi. 12, fig. G-7. Boulenger, Cat. snakes Brit, inus., 

 1893, 1, p. 258-259. 



Type locality: — West Java. 



The Bryant collection contains three examples of this water-snake: — one 

 from Gunung Bunder, Mt. Salak, Java, with V. 166, C. 60; and two from 

 Tjibodas, Java, V. 154, 155; C. ?, 77. In all there are nineteen rows of scales. 

 This narrow range for these three specimens comes far within that given by 



Boulenger. 



Natrix maculata (Edeling). 

 Edeling, Nederl. Tijds. Dierk., 1864, 2, p. 203. Boulenger, Cat. snakes Brit, miis., 1893, 1, p. 260. 



Type locality: — Bandjermasin, Borneo. 



A specimen, M. C. Z. 7307 (T. Barbour), came from northern Sumatra. 

 It agrees well with Boulenger's description so far as squamation is concerned, but 

 differs in coloration. There are black blotches on each side of the neck, and but 

 two dorsal rows of dark spots, generally alternating in position. There is a 

 black spot at each end of every ventral shield. 



Brachyorrhus albus (Linnie). 

 Linn£, Syst. nat., ed. 10, 1758, 1, p. 218. Boulenger, Cat. snakes Brit, mus., 1893, 1, p. 305-306. 



Type locality: — "Habitat in Indiis.'^ 



Four specimens of this variable form are in hand, — three from Ternate, 

 and one from Ambon. They were all taken by Malay helpers; and it is, unfor- 

 tunately, impossible to offer any notes on either habits or habitat. 



