CHAP. XIX.] 
REPTILES. 
409 
(6 sp.), and Pelomedusa (3 sp.), inhabit Tropical and South Africa 
and Madagascar. 
Family 59. — TKIONYCHIDiE. (3 Genera, 25 Species.) 
General Distribution. 
Neotropical 
Sub-regions. 
Nearctio 
Sub-regions. 
Pala: ARCTIC 
Sub-regions. 
Ethiopian 
Sub-regions. 
Oriental 
Sub-regions. 
Australian 
Sub-regions. 
3 - 
4 
1.2.3- 
1 . 2 . 3 . 4 j 
— 
The distribution of the Trionychida?, or Soft Tortoises, is very 
different from that of the Chelydidse, yet is equally interesting. 
They abound most in the Oriental region, extending beyond it 
to Northern China and Japan. In the Nearctic region they are 
only found in the Eastern States, corresponding curiously to 
the distribution of plants, in which the affinity of Japan to 
the Eastern States is greater than to California. The Triony- 
chidas are also found over the Ethiopian region, but not in 
Madagascar. 
The genera are, — Trionyx (17 sp.), which extends over the 
whole area of the family as above indicated; Cycloderma (5 sp.), 
peculiar to Africa; Emyda (3 sp.), the peninsula of India, 
Ceylon, and Africa. 
Family 60. — CHELONIIEiE. (2 Genera, 5 Species.) 
General Distribution. — All the warm and tropical Seas. 
The Marine Turtles are almost universally distributed. 
Eermatochelys (1 sp.), is found in the temperate seas of both 
the Northern and Southern Hemispheres ; Chelone (4 sp.), ranges 
over all the tropical seas — C. viridis , the epicureans’ species, 
inhabiting the Atlantic, while C. imbricata which produces the 
“ tortoiseshell ” of commerce is found in the Indian and Pacific 
oceans. 
