1885. J PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 551 



Mytilus edulis Liim^. 



San Diego Bay ; not numerous, probably introduced. 

 Mytilus bifurcatus Stearns. 



Abuudant near high-water mark all along the coast. 

 Modiola capax Conr. 



Abundant, especially at False Bay and similar locations. 



Modiola recta Cour. 



False Bay ; rare. 

 Modiolaria denticulata Dall. 



San Diego (young). 

 Adula falcata Gld. 



La Playa and elsewhere in rocks. 



Adula sty Una Cpr. 



In rocks on ocean beaches; not rare. 

 Septifer bifurcatus Rve. 



Larger and coarser than Mytilus bifurcatus; abundant. 

 Lithophagus plumula Hanley. 



La Playa, with pholads ; rare. 

 Lima dehiscens Conr. 



Under stones, living near high-water mark, False Bay, April, 1882. 

 Also Todos Santos Bay, but not found alive. 

 Pecten monotimeris Conr. 



Not often collected. 

 Pecten aequisulcatus Cpr. 



Abundant at seasons in San Diego Bay. Todos Santos Bay. Often 

 collected for food. 

 Hinuites giganteus Gray. 



This tine species we And abundant at La Playa, but elsewhere on the 

 ^oast it appears rare, though not absent. 

 Auomia lampe Gray. 



Todos Santos Bay. 

 Placunanomia macroschisma Desh. 



Usually inhabiting deep water, attached to stones or bones of whales. 

 Earely collected. 

 Ostrea lurida Cpr. 



Abuiuliuit and very variable in size and form. 



* BRACHIOPODA. 



Platidia anomioides (Scacchi) Costa, var? 



Terebratula anomioides Scacchi, Phil. Moll. Slcil., ii, p. 69, pi. xviii, fig. 9, 1844. 



[Mediterranean; ISorth Atlantic; Florida Strait; San Diego, Cal., 

 and Todos Santos Bay, Orcutt. 



The shells which I refer to the above species are in general like 



t 



