3 22 



Head with two short barbels; neck with long, erect tubercles. 

 Tail shorter than the head. Fore limbs with five, hind limbs 

 with four claws, digits entirely webbed. 



Carapace dark brown, a small black spot on each vertebral 

 and costal shield near the hind border, sometimes very in- 

 distinct; plastron yellowish; soft parts greyish above, yellowish 

 below, these two colours sharply separated in the head and 

 neck, where the upper jaw is greyish, the lower one yellow; 

 a yellowish streak on each side, becoming indistinct in adult 

 specimens, from behind the eye to above the tympanum and 

 continued anteriorly in the interorbital space, where they meet. 

 Length of shell 220 mm. 



Habitat: Waigeu!; New Guinea (Fak Fak, Passim, Sekanto 

 river!, Sinai river!, lake Sentani!, Mimika, Stekwa and Lorentz! 

 rivers, Merauke!, Stephansort, Bogadjim, Katow). 



Eggs have been found, measuring 30 by 55 mm. 



6. Fam. CARETTOCHELYIDAE. 



Shell without epidermal shields. Neck retractile; ear hidden ; 

 jaws without fleshy lips; snout ending in a proboscis. Plastron 

 large, united with the carapace, composed of nine bones. Limbs 

 broad and flat, with two claws. 



A single genus. 



i. Carettochelys Ramsay. 



(RAMSAY, Proc. Linn. Soc. N. S. Wales (2) I p. 158, 1886). 



Head large, covered with undivided skin, and with a fleshy 

 proboscis; orbits lateral; temporal arch very broad; jaws strong. 

 Six or seven (8) neural plates; 21 marginalia. Limbs broad, 

 flat, with two claws. Tail short. 



Distribution. New Guinea. 



A single species, living in rivers, down to the sea. 



i. Carettochelys insculpta Ramsay. 



Carettochelys insculpta, Ramsay, Proc. Linn. Soc. N. S. Wales (2) I 1886, 



p. 158, pi. Ill, IV. 

 Carettochelys insculpta, Boulenger, Cat. Chelon. 1889, p. 236; Proc. Zool. Soc. 



London 1898, p. 8515 Transact. Zool. Soc. London XX Part V 1914, p. 253, 



pi. 28 rig. i. 



