CHAP. XIX.] 
REPTILES. 
405 
Order III— EHYNGOGEPH ALINA. 
Family 53.— PHYNCOCEPHALIDZE. (1 Genus, 1 Species.) 
General Distribution. 
Neotropical 
Nearctio 
Pal^arctic I 
Ethiopian 
Oriental 
Australian 
Sub-regions, 
Sub-regions, 
Sub-regions. 
Sub-regions, 
Sub-regions. 
Sub-regions. 
4 
The singular and isolated genus Hatteria — the “ Tuatara ” or 
fringed lizard — which alone constitutes this family, has peculiari- 
ties of structure which separate it from both lizards and crocodiles, 
and mark it out as an ancestral type, as distinct from other living 
reptiles as the Marsupials are from other Mammalia. It is con- 
fined to New Zealand, and is chiefly found on small islands near 
the north-east coast, being very rare, if not extinct, on the main 
land. A fossil reptile named Hyperodapedon, of Triassie age, has 
been found in Scotland and India, and is supposed by Professor 
Huxley to be more nearly allied to Hatteria than to any other 
living animal. 
Order IV.—GROCODILIA. 
Family 54. — GAVIALIDZE. (2 Genera, 3 Species.) 
General Distribution. 
Neotropical 
Sub-regions. 
Nearctio 
Sub-regions. 
Palaiarctic 
Sub-regions, 
Ethiopian 
Sub-regions. 
Oriental 
Sub-regions. 
Australian 
Sub-regions. 
i — 
The Gavials are long-snouted Crocodiles with large front teeth, 
and canines fitting in notches of the upper jaw. They consist 
of two genera, Gavialis (1 sp.), inhabiting the Ganges ; Tomistorm 
(2 sp.), found in the rivers of Borneo and North Australia. 
