620 MR. STANLEY S. FLOWEE ON THE [May 16, 



short distance, and then trend outwards again and are continued 

 back on to the neck, gradually getting thinner and fainter ; the 

 fifth dark line is median, commencing in the fork of the Y, but 

 without joining it, and running back on to the neck, gradually 

 getting fainter and disappearing considerably in front of where 

 the inner pair of dark lines cease. Iris pale gold. 



Size. This Penang specimen measured, after death : — 



Length of dorsal leather-shield 190 mm. 



Breadth „ „ 145 „ 



Length from snout to tip of tail 340 „ 



"When it was alive the dorsal leather-shield had been about 

 202 mm. long. 



Mab. Mergui, Malay Peninsula, Sumatra, Java, and Borneo. 



20. Teionyx hueum Gray. 



Oymnojjus gangeticus, Cantor, p. 8. 



Trionyx gangeticus, Giinth. Eept. Brit. Ind. p. 47. 



Trionyx Jiurum, Blgr. Cat. Chel. etc. p. 249 ; Blgr. Fauna Brit. 

 Ind., Eept. p. 13 (young fig.). 



This species does not seem to have been met with in the Straits 

 Settlements since Cantor's time, who says " it is of fierce habits, 

 desperately defending itself by biting, emitting when excited a 

 low, hoarse, cackling sound." 



Bab. Ganges and Malay Peninsula. 



N.B.— Dr. Hanitsch (Kep. Eafiles Libr. & Museum, 1897, p. 9) 

 records Tiionyx hururn from Ulu Legeh. I saw the specimen, but 

 could not identify it myself. 



21. Teionyx phayeii Theob. 



Trionyx pTiayrii, Blgr. Cat. Chel. etc. p. 251 (skull fig. p. 252). 



Phayre's Soft Turtle was recorded from Penang (Anderson, 

 J. A. S. B. 1871, p. 30), and in September 1897 I obtained one 

 specimen in a stream among the foot-hills of Gunong Pulai, Johore. 



Hab. Burma, Malay Peninsula, Java, Borneo. 



22. Teionyx oaetilaginefs (Boddaert). 

 Gymnopus cartilaginea, Cantor, p. 9. 



Trionyx ornatus, Giinth. Eept. Brit. Ind. p. 48, pi. iv. fig. B. 



Trionyx cartilagineus, Blgr. Cat. Chel. etc. p. 253 (skull fig.). 



Localities. This is apparently the most numerous species of Soft 

 Tortoise, both in the Malay Peninsula and Siam, living in rivers 

 and ponds. The British Museum Catalogue mentions specimens 

 from Penang (Cantor), and from Siam and Cambodia (Mouhot). 

 The only specimens I obtained were from Bangkok. 



Habits. This Trionyx is very fierce and bad-tempered; one that 

 I kept for seven and a half months, and tried to tame, remained 

 just as intractable as when first caught, biting at anything that 

 approached it. They can bite hard, too, and it is very difficult to 

 get them to let go of anything they have seized, unless they 



