ART. 22 SAN PEDRO FAUNA OLDROYD. 23 



Family LYIMNAEIDAE. 

 Genus PLANORBIS MuUer, 1774. 



PLANORBIS TRIVOLVIS Say, 1817. 



Living all along the coast. 



PLANORBIS DEFLECTUS Say, 1824; one specimen. 



With the last, living. 



CRAB REMAINS IDENTIFIED BY MISS MARY J. RATHBUN. 



LopJiopanopciis leucomanus Lockington. 



Twelve major anrl two minor dactyls, twenty-three immovable fingers. 

 Lophopanopeus diegensis Rathbun. 



Sixty-three minor dactyls and seventy immovable fingers. 

 Lophopanopeus lockingtoni Rathbun. 



Nine movable fingers. 

 Hemigrapsiis oregonensis Dana. 



One hundred and twenty movable and fourteen immovable fingers. 

 Hemigrapsns nndiis Dana. 



Nineteen movable and eleven immovable fingers. 

 Cancer productiis Randall. 



Seventeen movable and sixty-six immovable fingers. 

 Cancer gracilis Dana. 



Two movable fingers. 

 Randallia ornata (Randall) and 

 Randalliu, new species. 



Fifteen arm joints. 

 Callianassa, new species. 



Eight dactyls of ambulatory legs. 

 Mesorhoea, new species. 



Two hands, one arm. 



SPINES AND FRAGMENTS OF SEA URCHINS, EITHER OR BOTH OF THE FOLLOWING TWO SI'ECIES. 



Strongplocentrofus franciscamis A. Agassiz. 

 Strongylocentrotus purpuratus Stimpson. 

 Dendraster excentricus Eschscholtz. 

 Plentiful. 



OTHER IN\'EBTEBRATA. 



Foraminifera, three species. 



Bryozoa, four species, two of which are very plentiful, and also plentiful, living 

 in Puget Sound. 



DESCRIPTIONS OF NEW FORMS. 

 ACTEOCINA PEDROENSIS. new species. 



Plate 2, fig. 9. 



Shell large, slightly pyriform, with a small prominent subcylin- 

 drical nucleus of about two whorls and five subsequent whorls ; suture 

 narrowly channeled; the external surface is decorticated in all the 

 specimens, but appears to have been smooth, the surface remaining 

 shows faint spiral feebly punctate striae with rather wide inter- 



