SERPENTES. 123 



Enhydris doriae (Peters). 

 Pbtebs, Mon. Berl. akad., 1871, p. 577. Boulenger, Cat. snakes Brit, mus., 1896, 3, p. 13. 



Type locality: — Sarawak. 



It may be of interest to record a specimen of this rather rare species from 

 Borneo, No. 5,240, M. C. Z. Shelford (Notes Sarawak museum, 1901, p. 64) 

 states that the Sarawak museum possesses this species; and Brown (Proc. Acad, 

 nat. sci. Phila., 1903, p. 180) records a specimen. No. 2,311, in the collection of the 

 Academy, taken in the Kapuas River. Boulenger has one specimen from 

 Sarawak in the British museum. 



Homalopsis buccata (Linn£). 

 Linn:6, Syst. nat., ed. 10, 1758, 1, p. 217. Boulenger, Cat. snakes Brit, mus., 1896, 3, p. 14-15. 



Type locality: — "Habitat in Indiis." 



An excessively variable species, which is common in all the waterways of 

 western Java. It is readily tamed, and eats frogs, chiefly Rana tigerina and 

 R. erytkraea. The well-known change in color which takes place during growth 

 has been accurately described by Flower (Proc. Zool. soc. London, 1899, p. 677- 

 678). In hand are six adults and four young from near Buitenzorg, taken in 

 April, 1907. On account of its swimming powers one would hardly expect to 

 find evidence that subspecific races may be developing in this form. The ten 

 specimens mentioned above, however, have their scale-rows as follows : — one 35, 

 five 37, four 39. The two which Boulenger had from Java possessed 37 and 39. 

 Bryant had six examples from Buitenzorg and Depok; their scales range: — 

 rows 33; 37, 39 (4 ex); V. 153-175, C. 73-91. The specimens from the main- 

 land have a tendency to much higher numbers of rows; this is evident from 

 material available here, and from Boulenger's data. Again, more material is 

 necessary to show how distinct the Javan examples are from the apparently 

 much more variable individuals on the mainland. 



Range: — Southeastern Asia generally; Sumatra, Java, and Borneo. 



Hurria rynchops (Schneider). 

 Schneider, Hist. Amphib., 1799, 1, p. 246. Stejnegeh, Bull. 58, U. S. nat. mus., 1907, pp. 304-306. 



Type locality: — Ganjam, India. (Original description based on Russell, 

 account of Indian serpents, 1796, 1, pi. 17). This town is situated in the extreme 

 northeastern corner of the Madras Presidency, Lat. 20° 30' N., Long. 85° E. 

 It was the seat of a Resident in the days of the East India Company. It was 

 ravaged by fever and abandoned during the early part of the nineteenth century. 



This common species has a distribution very similar to that of Chersydrus 



