NO. IO MOLLUSKS BARTSCH AND REHDER 1 5 



U.S.N.M. no. 472580, were collected along the shore in Sulivan Bay, 

 James Island, Galapagos Islands. 



This is the finely sculptured race that inhabits the Galapagos Is- 

 lands, the typical Brachidontes multiformis Carpenter from Panama 

 being more coarsely sculptured. 



Cedros Island, Lower California, Mexico. 



Collections were made on the east side of the island, along the 

 shore, north and south of the cannery, July 17, 1938. 



Aplysia cedrosensis, new species 



Littorina planaxis Philippi 



Acmaea limatula Carpenter 



Nuttalina fluxa Carpenter 



Brachidontes stearnsianus Pilsbry and Raymond 



Magdalena Bay, Lower California, Mexico. 



The specimens were dredged inside the north point of the entrance 

 to the bay, between Belcher Point and the anchorage in 10—15 

 fathoms on sandy, weedy bottom, July 18, 1938. 



Conns magdalcncnsis, new species 

 Strombina gibbcrula Sowerby 

 Crncibulum spinosnm Sowerby (young) 

 Crepidula arcnata Broderip 

 Crepidula nummaria Gould 

 Lncapinclla callomarginata Carpenter 

 Transcnella puclla Carpenter 

 Laevicardhmn elenense Sowerby 



Cape San Lucas, Lower California, Mexico. 



The specimens were dredged off Punta Gorda in 6-10 fathoms, 

 and in San Jose del Cabo Bay, July 19, 1938. 



Fissurclla mgosa Sowerby 



Lyonsia (Phlyctidcrma) Incasana, new species 



Tivcla dclcsscrti Deshayes 



Chama corrugata Broderip 



Cardita affinis Sowerby 



Septijcr cumingii Dunker 



Socorro Island, Mexico. 



Collections were made along shore at the landing place in Braith- 

 waite Bay, July 20, 1938. 



Bulla pnnctulata A. Adams 

 Terebra rooscvclti, new species 



