170 



Cryptoconchus (3), New Zealand, Indo-Malayan Archipelago, 



Florida. 

 Loboplax — including Acanthochites exilis Torr & Ashby — 

 (5), New Zealand, Australia, New Caledonia, Indo-Malayan 

 Archipelago. 

 Meturoplax (1), Australia. 

 Katharina (1), North Pacific, California. 



Amicula (3), Arctic, Behring Sea, North Atlantic, North Pacific. 

 Cryptochiton (1), North Pacific, Japan. 



Fara. Cryptoplacidae. 



Cryptoplax (7), New Zealand, Australia, Indo-Malayan Archipe- 

 lago, New Caledonia, Fiji Islands, Samoa Islands, Philippines, 

 Maldive and Laccadive Archipelagoes, Natal. 



Choneplax (2), West India. 



Fam. Chitonidjie. 



Chiton. 



Chiton s. str. (4), West India. 



(10), Westcoast of the America's. 

 (9), Japan, Indo-Malayan Archipelago, Poly- 



nesia, Ceylon. 

 (14), Australia, New Zealand. 

 (16), Mediterranean, Africa. 

 Radsia — including Chiton viryulatus Sow. — (5), Chili, 



Galapagos Islands, California. 

 Sderochiton (1), Torres Straits. 

 Eudoxochiton (2), New Zealand. 



Tonicia — including- Fannettia — (18), California to Falklaud 

 Islands. 



(1), West India. 

 (16), Australia, New Zealand, Indo-Malayan Archi- 

 pelago, Philippines, New Caledonia, Fiji Islands, 

 Japan, Ceylon, Red Sea. 



