462 
GEOGRAPHICAL ZOOLOGY. 
[part IV. 
Family 106. — RHINIDiE. (1 Genus, 1 Species.) 
“ Sharks with depressed flat body and large expanded pectoral 
fins.” 
Distribution. — Temperate and tropical seas, from Britain to 
California and Australia. 
Family 107.— PRISTIOPHOEULE. (1 Genus, 4 Species.) 
“ Sharks with produced flat snout, armed with teeth on each 
edge.” 
Distribution^ — Seas of Japan and Australia. 
Sub-order Batoidei. (Rays.) 
Family 108.— PEISTIDrE. (1 Genus, 5 Species.) 
“ Rays with produced snout and lateral saw-like teeth.” 
Distribution. — Seas of tropical and sub-tropical regions. 
Family 109.— RHINOBATIDAC. (3 Genera, 15 Species.) 
“ Rays with long and strong tail, having a caudal and two 
dorsal fins.” 
Distribution. — Tropical and sub-tropical seas. 
Family 110. — TORPEDINIDiE. (6 Genera, 15 Species.) 
“ Rays with broad smooth disc, and an electric organ.” 
Distribution. — Tropical and temperate seas, from Britain to 
Tasmania. 
Family 111. — BAIIDiE. (4 Genera, 29 Species.) 
“ Rays with broad rhombic disc and no serrated caudal spine.” 
Distribution.— All temperate and tropical seas. Several 
species of Maia are found on our coasts. 
