ARNOLD — THE PALEONTOLOGY AND STEATIGRAPHY OF SAN PEDRO. 73 



MOLLUSCA (Continued.) 



Family X. Limidce 115 



Genus Lima (Bruguiere) Cuvier 115 



Subgenus Lima, «. s 115 



Section Mantelhim Ad.^m.s 115 



37. (M.) dehiseens Cone.4d 116 



SUPERFAillLY ANOMIACEA 116 



Family XI. Anomiidce 116 



Genus Pododesmns Philippi 116 



Section Mouia Gr.w 116 



38. (M.) macroschisma Deshates 116 



Genus Anomia LiNXE 117 



39. lampe Gray 117 



[S. D.] limatula Dall 118 



SUPERFAMIL Y MYTILACEA 118 



Family XII. Mytilida: 118 



Genus Mytilus (Linne) Bolten 118 



Section Mytilus, a. s 118 



40. (M.) edulis Linn^ 118 



Geuus Septifer Eecluz 119 



41. bifurcatus Reeve 119 



Genus Modiolus Lamarck 120 



Section Modiolus, s. s 120 



42. (M.) foruieatus Carpenter 120 



43. (M.) rectus Conrad 120 



Genus Lithoi^haga Bolten 121 



44. plumula Hanlev 121 



Order Axomalodesmacea 121 



SUPERFAMILY ANA TINACEA 121 



Famil;/ XIII. Periplomidce *. 121 



Geuus Periploma Schumacher 121 



45. argentaria Conrad 121 



Family XI V. Thrariidm 122 



Geuus Thracia (Leach) Blainvillb 122 



46. trapezoides Conrad 122 



Family X V. Pandoridce 123 



Genus Pandora 123 



Subgenus Keunerlia Carpenter 123 



47. (K.) bicariuata Carpenter 123 



48. (K.) filosa Carpenter 124 



Geuus Clidiophora Carpenter 124 



49. punctata Conrad 124 



Family X VI. Lyonaiidie 125 



Geuus Lyonsia TuRTON 125 



50. californica Conrad. 125 



Gemis Mytilimeria Conrad 125 



51. nuttalli Conrad 126 



SUPERFAMILY POROMYACEA 126 



Family X VII. Verlicordiidie 126 



Genus Verticordia S. Wood 126 



52. noyemcostata Adams & Reeve 126 



Order Teleodesmacea 127 



SUPERFAMIL Y ASTARTACEA 127 



Family X VIII. Aslartidw 127 



Genus Astarte Sowerby 127 



Subgenus Crassinella Bayle 127 



53. (C.) brauneri, sp. nov 127 



SUPERFAMILY CARDITACEA 128 



Family XIX. Cardiiidai 128 



( 11) ) June 11, 1903. 



