325 



of the shell with irregular wavy raised lines (fig. 125). Head 



large, covered with undivided skin, snout prominent, ending 

 in a fleshy, thick proboscis, bent 



downwards; nostrils situated supe- rr'^-:;^.^^..^::^-^!^^'^^ ,..■-. ^-J^^yr^ 



riorly; eyes lateral; neck short. Limbs ?J ^ ■"^^■?j4/-^vV>--^^::'^*^0 



flat, webbed to the tips of the digits, yr-^^'^^:.^^"^"'^-"---.':^ '''.^ '^^--..^M 



with two claws; fore limb loncrer i>^ ' '■y':.-"'"''''^ ■■'■:--<:.-: ''''^&i^ 



than hind limb, with 7 — -9 broad '^^•^■^^'''^'y'.-^rsy.-yyyy-:'^::^^^ 



transverse band-like scales anteriorly ^ -^ ""'^'?r'*>-i^/*^ 

 and three to four transversely en- 

 larged scales at the posterior margin. ^''S- 125. 



T^ ., , , ... , , Carcttochelvs iiisctilpta Ramsay. 



lail short, with 14 — -16 curved n- , 'c , 1 i\ . ■ 



' ^ Fragment of costal plate, nat. size. 



shields above. 



Brown above and below. Length of shell 495 mm. 



Habitat: New Guinea (Strickland river, Dameracura and 

 Kiwai Island at the mouth of the Fly river, Morehead river, 

 Merauke!, Lorentz river!, Stekwa river!, Lake Jamur!). 



The female deposits 17 — 27 round eggs (fig. \02b). 



7. Fam. Trionychidae. 



No epidermal shields on the carapace and plastron, but skin 

 covering them. Head and neck completely retractile; ear 

 hidden; jaws covered by fleshy lips; snout ending in a proboscis. 

 Plastron small, connected with the carapace by skin. Tail very 

 short. Limbs with distinct digits, with three claws. 



Aquatic turtles, living in rivers and ponds; Pelochelys enters 

 the sea. Carnivorous. 



Nom. i n d i g. Labi labi. 



Key to the In do-Australian genera. 



A. Plastron without cutaneous valves. 



I. Orbit nearer the temporal tlian the nasal fossa; 

 proboscis long. 



a. The 8 pair of costals separated in the middle by 



the neurals; postorbital arch keeled exteriorly . . . i. Dogania p. 326. 

 I). Last pair of costals in contact in the median line; 



postorbital arch flat exteriorly 2. Triouyx p. 327. 



II. Orbit nearer the nasal than the temporal fossa; 



proboscis short 3. Pelochelys p. 331. 



B. I'lastron with a cutaneous valve, which may cover the 



hind limb 4. Emyda p. 332. 



