58 PROCEEDINGS OF THE ACADEMY OF [1898. 



7. Gobrseus californicus Conrad. 



Sitka to San Diego, California, also Kamtchatka (Dall) and 

 Japan. 



8. Gobrseus fucatus Hinds. 

 Magdalena Bay, Lower California. 



9. Gobrseus edentulus Gabb. 



60 fms., San Pedro, California. 



Genus SANGUINOLARIA Lamarck. 



(= Sanguinolaria Lam., 1799, not Blainv., 1825, nor Desh., 

 1835; -f- Aulus (sp.) Oken, 1815, not Oken, 1821; + Lobaria 

 Schum., 1817, not Muller, 1776; + Hiatula sp. Modeer, 1793). 



Type S. (Solen) sanguinolentus Gmelin, Antilles. 



Section Sanguinolaria s. s. 



1. Sanguinolaria sanguinolenta Gmelin. 

 Antilles to Brazil ; Ceylon. 



2. Sanguinolaria tellinoides A. Adams. 

 Gulf of California to Panama. 



Section Psammotella Blainville. 



(Psammotelle Blainv., 1826; -f- Psammotella Herrm., 1852). 



3. Sanguinolaria operculata Gmelin. 

 Texas to Brazil. (Type species). 



4. Sanguinolaria hanleyi Bertin. 

 Lower California to Panama. 



5. Sanguinolaria vitrea Deshayes. 

 Texas to Colon. 



Section Nuttallia Dall, 1897. 



Inequivalve, suborbicular. 



6. Sanguinolaria nuttallii Conrad. 



Southern California and Japan. (Type species). 



Genus AMPHICH.ENA Philippi. 



(= Amphichcena Phil., 1847, not H. & A. Ads., 1856 ; -|- Am- 

 phidona Morch, 1858). Sole species known. 



1. Amphichaena kindermannii Phil. 

 Mazatlan. 



