314 



as the dorsal shield, the digits being long, in the adult shorter; 

 limbs paddle-shaped, no claws. 



Dark brown above, with or without yellow spots; in the 

 young longitudinal keels yellow and limbs bordered with yellow. 

 Length nearly 2 '/a M. 



Habitat: The Indian Ocean, generally distributed: Sumatra 

 (Padang); Solor Island near the eastern coast of Flores!; New 

 Guinea (Bogadjim). — Coast of the Malay Peninsula, Tenas- 

 serim; Pacific Ocean: Solomon Islands, New Zealand. Atlantic 

 Ocean: Cape of Good Hope. Occasionally in temperate seas: 

 Arabia, Dalmatia. 



5. Fam. Chelyidae. 



Shell covered with epidermal shields. Neck always exposed, 

 bending sideways. Plastron large; nine plastral bones. Digits 

 moderate, with four or five claws. 



Key to the Indo-Australian genera. 



A. Jaws weak; neck longer than the dorsal vertebral 

 column ; intergular large, behind the gulars ; first vertebral 



shield longer than second i, Chclodiiia p. 314. 



B. Jaws strong; neck shorter than the dorsal vertebral 

 column ; intergular between the gulars ; first vertebral 



shield shorter than second 2. Emydura p. 317. 



I. Chelodina P'itz. 



(FiTZiNGER, N. Class. Rept. p. 6, 1826). 



Jaws weak, without alveolar ridges; no parieto-squamosal 

 arch. Neck longer than the dorsal vertebral column. Neural 

 plates absent; nuchal shield present; plastron as large as or 

 smaller than the opening of the shell; intergular large, behind 

 the gulars. Limbs with four claws, digits entirely webbed. 



Distribution. Australia; New Guinea. 



Key to the Indo-Australian species. 



A. Intergular more than twice as long as the suture 



between the pectorals \. C. novac-guincae p. 315- 



B. Intergular not twice as long as the suture be- 

 tween the pectorals, which are at least as long 

 as the intergular. 



