ARNOLD — THE PALEONTOLOGY AND STEATIGRAPHY OF SAN PEDRO. ' 85 



MOLLUSCA (Continued). 



390. cidaris A, AiMMS 334 



391. perumubilis Cakpknter 335 



Familij LXXX V . Cijrloslremalidce 335 



Genus Vitrinella C. B. Adams 335 



392. williamsoni Dall 335 



SUPERI'AMILY ZYGOBKANCIIIA 336 



Family LXXX VI. Ilaliolkla- 336 



Geuus Haiiotis Linnk 336 



393. fulgens Philippi 336 



Famili/ LXXX VII. FissurelVuU 337 



Sulifamily Fiitsuri^UideiiKZ 337 



Geuus Lucapina Gray 337 



394. creuulata Sowerby 337 



Subfamily Emarijinulince 337 



Genus Fissuridea Swainson 337 



395. aspera Esch 338 



396. iu;uqualis Sowerby 338 



397. muriua (Carpenter) Dall 3.39 



Geuus Clypidella Swainson 339 



398. bimaculata Dali 339 



399. callomarginata Carpenter 340 



Geuus Fissurella Brugciere 340 



400. volcano Reeve 340 



Geuus Puucturella Lowe 341 



401. cucuUata Gould 341 



402. galeata Gould 341 



SUBCLASS ISOPLEUEA 342 



Order Polyplacophora 342 



SUPERFAMILY EOOHITONIA 342 



Family LXXX VIII. Chiloiiidce 342 



Genus Ischuochiton Gray 342 



403. regulaiis Carpenter 342 



Geuus Cryptochiton Middendorfk & Gray 342 



404. stelleri Middendoref 342 



SUPERFAMIL Y OPSWHITONIA 343 



Family LXXXIX. Mopaliidce 343 



Geuus Mopalia Gray' 343 



405. eiliata Sowerby 343 



ARTHROPODA 344 



CLASS VIII. CRUSTACEA 344 



SUBCLASS EUCRUSTACEA 344 



Supeborder Cirripedia 344 



Order Thoracica 344 



Family XC. Balanidce 344 



Genus Balanus Lister 344 



406. coucavus Bronn 344 



Soperordeb Malacostraca 345 



Order Deiapod.a .345 



Suhokder Brachycra 345 



Family (Suhtribe) XCI. Cancroidea 345 



Section Caucrini 345 



Genus Caucer Linne 345 



407. breweri Gabb 345 



VERTEBR ATA 346 



CLASS IX. PISCES 346 



Order Elasmobranchii 346 



Suborder Selachii 346 



Family XCI I. Trygonidm .346 



Geuus Urolophus 346 



408. halleri { ?) Cooper 346 



