NO. 2 



rost: the family arcidae 



197 



Fig. 84. Anadara (Larkinia) multicostata (Sowerby) 1833. South 

 of Isla Tiburon, Gulf af California, a. Lateral view. b. 

 Dorsal view. c. Abdominal sense organs. Length, 62.8 mm. 

 d. Bahi'a San Francisquito, Gulf of California. Dorsal view 

 showing arrangement of ligament of young specimen. 

 Length, 13.8 mm. 



