78 CALIFORNIA ACADEMY OF SCIENCES. 



MOLLUSCA (Continued). 



Famiii/ XL V/I. Physldce 196 



Genus Physa DitAP.iBN'Ano ' 196 



1.58. heterostropha Say 196 



SUPERFAMILY DITREMA TA 196 



Family XL VIIl. Auriculidx 196 



Subfamily Melam.pina: 196 



Genus Melampus Montfort 196 



159. olivacens Carpextkr 197 



SUPERFAMILY PETROPHILA 197 



Famdy XLIX. Gadinilda 197 



Genus Gadinia Gray 197 



160. reticulata Sowkrey 197 



SupERORUEB Streptoneura 198 



Order Ctenobrancu iata 198 



SUPERFAMILY TOXOGLOSSA 198 



Family L. Ttrehrida 198 



Genus Terebra Broguiere 198 



Section Acus (Humphrey) Gray 198 



161. (A.) simplex Cabpexter 198 



Family LI. Conidn: 1 99 



Genus Couus Linne 199 



162. californicus Hinds 199 



Family LI I. Pleurotomidte 199 



Genus Pleurotoma Lamarck 199 



163. perversa Gabb 200 



Subgenus Borsonia Bellardi 200 



164. (B.) bartschi, sp. nov 200 



165. (B.) dalli, sp. nov 201 



166. (B.) hooveri, sp. nov 201 



Subgenus Leucos yrinx Dall 202 



167. (L.) pedroana, sp. nov 202 



Subgenus Geuota Ada.ms 202 



Section Dolichotoma Bellardi 202 



168. (D.) carpeuteriana Gabb 202 



169. (D.) cooperi, sp. nov 203 



170. (D.) tryoniana Gabb 203 



Genus Drillia Gray 204 



171. eaucellata Carpenter 204 



172. bemphilli Stearns 204 



[S. D.] iucisa Carpenter 205 



173. inermis Hinds 205 



174. inei-mis, var. penicillata Carpenter 205 



175. johusoni, sp. nov 206 



176. merriami, sp. nov 207 



177. moutereyeusis Stearns 207 



178. pudioa Hinds 208 



179. renaudi, sp. nov 208 



180. torosa Carpenter 209 



Genus Bela Gray 209 



181. fidicula Gould 209 



182. sanct.'o-mouic.-B, sp. nov 210 



Genus Maugilia (Leach) Kihso 210 



Subgenus Clathurella Carpenter 210 



183. (C.) conradiana Gabb 210 



Subgenus Cytbara Schumacher 211 



184. (C.) branueri, sp. nov 211 



Subgenus Mangiliu Risso, s. s 211 



185. (M.) augulata Carpenter 212 



186. (M.) hooveri, sp. nov 212 



