Arnold— THK paleontology and stratigraphy of san pedro. 83 



MOLLUSCA (Continued). 



Genus Csecum Fleming 297 



324. californiciim Dall 297 



325. crebricinctum Carpenter 298 



326. magnum Stearns 298 



Family LXXI. Vermelidce 299 



Genus Serpulorbis Sassi 299 



327. squamigerus Carpenter 299 



Subgenus Vermicularia Lamarck 299 



328. (V.) sp. indet 299 



Genus Spiroglyphus Dacdin 299 



329. lituella Morch 299 



Family LXXU. Turrilellida: 300 



Genua Turritella Lamarck 300 



330. cooperi Carpenter 300 



331. jewettii Carpenter 300 



Family LXXI II. Litlorinidce 301 



Genus Littoriua Ferd.ssac 301 



332. planaxis (Nuttall) Philippi 301 



333. scutulata Gould 302 



Genus Lacuna Turton 302 



334. compacta Carpenter 302 



335. porrecta Carpenter 303 



336. solidula (Loven) Carpenter 303 



Family LXXI V. Fossaridm 304 



Genus Fossarus Philippi 304 



Subgenus Isapis H. <fe A. Adams 304 



337. (I.) fenestrata Carpenter 304 



family LXX V. Bissoidie 304 



Genus Kissoa Freminville 304 



338. acutelirata Carpenter 305 



Subfamily Hydrobiince ,305 



Genus Paludestrina d'Orbigny '. 305 



339. curta, sp. uov 305 



340. stokesi, sp. nov 305 



Family LXX VI. Calypirceidce 306 



Genus Crucibulum Schumacher 306 



Section Crucibulum s. s 306 



341. (C.) spinosum Sowerby 306 



Genus Galerus Humphrey 307 



342. mammillaris Broderip 307 



Genus Crepidula Lamarck 307 



343. aculeata Gmelin 308 



344. adunca Sowerby 308 



345. dorsata Broderip 309 



346. graudis Middendorff 309 



347. navicelloides Nuttall 310 



348. onyx Sowerby 310 



349. rugosa Nuttall 311 



Family LXX VII. Amaltheidce 31 1 



Genus Hipponyx De France 311 



.350. antiquatus Linn 312 



351. cranioides Carpenter 312 



352. tumens Carpenter 313 



Family LXX VIII. Nalicidce 313 



Genus Natica (Adanson) Scopoli 313 



Subgenus Cryptonatica Dall 313 



353. (C.) clausa Broderip & Sowerby 313 



Genus Polyuices Montfort 314 



Subgenus Neverita Risso 314 



354. (N.) recluziana Petit 314 



