236 CARETTOCHELYDID 2%. 
Fam, 10. CARETTOCHELYDIDA. 
Carettochelydidee, Boulenger, Ann. § Mag. H. H. (5) xix. 1887, 
peas 
Shell without epidermal shields. Plastron composed of nine 
bones. Limbs paddle-shaped; digits much elongate, only the two 
inner clawed. Neck not retractile. 
A single genus and species, which is still very imperfectly known. 
1. CARETTOCHELYS. 
Carettochelys, Ramsay, Proc. Linn. Soc, N.S. W. (2) i. p. 158 (1886). 
Six neural plates, all separated from one another by the costals, 
which meet on the median line. 
New Guinea. 
1. Carettochelys insculpta. 
Carettochelys insculptus, Ramsay, 1. c. pls. 1i.—vi. 
Carapace subcordiform, elevated and rounded in front, laterally 
flattened behind and strongly keeled, the sides shelving, with the 
marginal plates expanding, densely rugose. 21 marginals (in- 
cluding the pygo-marginal). The whole of the plates of the 
carapace and plastron are covered with small round raised rugations 
or wavy irregular raised lines between shallow sculptures ; towards 
the lower borders on the sides these take an elongated form some- 
times parallel to the sutures. Head large; lower jaw strong ; head 
with five to seven shields, anterior and median pairs coalesced. 
Anterior margin of fore legs covered with from seven to ten narrow, 
band-like, unequal shields. ‘Tail short, with from fourteen to 
sixteen narrow curved shields on the upper surface. 
Length of shell 46 centim. 
Fly River. 
