NO, 2 



ROST : THE FAMILY ARCIDAE 



183 



Fig. 81. Barbatia lurida (Sowerby) 1833. Isla Espiritu Santo, Gulf 

 of California, a. Lateral view. b. Dorsal view. c. Abdominal 

 sense organs. Length, 28.7 mm. 



Fig. 8.2. B. {Cucullaearca) reeveana (Orbigny) 1846. South Sey- 

 mour Island, Galapagos Islands, a. Lateral view. b. Dorsal 

 view. c. Abdominal sense organs. Length, 52.5 mm. 



Fig. 83. B. (Fugleria) illota (Sowerby) 1833. Off Puerto Escondido, 

 Gulf of California, a. Lateral view. b. Dorsal view. c. 

 Abdominal sense organs. Length, 25 mm. 



