no BARBOUR: ZOOGEOGRAPHY. 



racial separation which has been made on the ground of the great distinctness 

 of color. The body of the largest specimen is 21" long, and the tail 8". 



Flower (Proc. Zool. soc, London, 1896, p. 660) gives some important notes 

 which tend to show that var. B is also a local race which should be recognized 

 by a subspecific name. 



Natrix stolata (Linn£). 

 Linn6, Syst. nat., ed. 10, 1758, 1, p. 219. Stejneger, Bull. 58, U. S. nat. mus., 1907, p. 280-283. 



Type locality: — "America." 



A specimen of this species was taken near Lucknow, India, November, 1907, 

 in the act of swallowing a frog {Rana tigerina). In the Museum collections a 

 large number are preserved from various localities in India, especially from near 

 Umballa. The Rev. M. M. Carlton seftt large collections of Indian reptiles to 

 this institution from that locality. Boettger (Ber. Senck. nat. ges., 1894,p. 132) 

 records seven specimens from Hainan. These certainly average higher in 

 number of scales than Indian or even Formosan specimens. Thus, for eight 

 examples from Hainan the average is 150 for ventrals and 79 for subcaudals; 

 range, V. 148-152, C. 76-81. According to Boulenger's statistics (Cat. snakes 

 Brit, mus., 1893, 1, p. 254) Indian specimens range as follows: — V. 120-158, 

 C. 50-87. The average, however, is far lower than for the Hainan series. 

 Stejneger's data for Formosan specimens {loc. cit.), thirteen in number, show no 

 evidence of any peculiar local conditions; these range: — V. 142-150, C. 65-81. 

 Curiously specimens from Nepaul, the Khasi Hills, and Himalayas, average a 

 little higher than do the Hainan specimens, which come next in average number 

 of scales; then follow Formosan and Chinese, and then specimens from Lower 

 India and Ceylon. 



Known from India and Ceylon to the Phihppines and Formosa. It is not 

 certainly known from the Dutch East Indies. There is, however, in the British 

 museum a specimen said to be from Borneo. Boulenger doubts the accuracy 

 of this record. 



From its wide continuous range and general prevalence, this species is 

 probably one of those whose migration has been comparatively recent; and it 

 is probably still in process of actively increasing its range. 



Natrix vittata (Linn6). 

 Linn6, Syst. nat., ed. 10, 1758, 1, p. 219. Boulenger, Cat. snakes Brit, mus., 1893, 1, p. 255. 



Type locality: — "America." 



Fifteen specimens from Buitenzorg; and, in the Bryant series, ten from 

 Buitenzorg, eight from Depok, and six from Daroe, Bantam. The range of 



