ARNOLD — THE PALEONTOLOGY AND STKATIGRAPHY OF SAN PEDRO. 85 



MOLLUSCA (Continued). 



390. cidaris A. Auams 334 



391 . peramabilis Carpenter 335 



Famitij LXXX I'. Cyclostremalidce 335 



Geuvis Vitriiiella C. B. Adams 335 



.■?!)2. williamsoui Dall 335 



SUPERFAMILY ZYOOBRAyCHlA .^36 



Family LXXX VI. IldUotida 336 



Geuus Haiiotis Linnk 336 



393. fulgens Phii.ippi 336 



Family LXXX VU. Fissiirellidte 337 



Subfamily f^saurellideinie 337 



Genus Lucapina Gray 337 



394. creuulata Sowekby 337 



Subfamily Emargitiulince 337 



Gemis Fissuridea Swainsox 337 



395. aspera Esch 338 



396. inipqualis Sowerby 338 



397. muriua (Carpenter) Dall 3.39 



Genus Clypidella Swainson 339 



398. bimaculata Dall ■ 339 



399. callomarginata Carpenter 340 



Geuus Fissurella Bruguikre 340 



400. volcauo Reeve 340 



Genus Puncturella Lowe .S41 



401. cucullata GouLu 341 



40'2. galeata Gould 341 



SUBCLASS ISOPLEURA 342 



Order Polyp la cop h or a 342 



SUPERFAM/L Y EOCHITONIA 342 



Family LXXX VIII. Chiloiiidai 342 



Genus Ischuochitou Gray 342 



403. regularis Carpenter 342 



Geuus Cryptochiton Middendorff & Gray , 342 



404. stelleri Middendorff 342 



SUPERFAMILY OPSICHITONIA 343 



Family LXXXIX. Mopaliidce 343 



Genus Mopalia Gray 343 



405. ciliata Sowerby 343 



ARTH ROPODA 344 



CLASS VIII. CRUSTACEA 344 



SUBCLASS EUCRUSTACEA 344 



Suferorder Cirripedia 344 



Order Thoracica 344 



Family XC. Balanidce 344 



Genus Balanus Lister 344 



406. concavus Bronn 344 



SOPERORDER MaLACOSTRACA 345 



Order Decapoda 345 



Suborder Brachyura 345 



Family (Suhtribe) XCI. Cancroidea 345 



Section Cancrini 345 



Genus Cancer Linne 345 



407. brew'eri Gabb 345 



VERTEBR ATA 346 



CLASS IX. PISCES 346 



Order Elasmobranciiii 346 



Suborder Selachii 346 



Family XCI I. Tryijonidie 346 



Genus Urolophus 346 



408. halleri ( ?) Cooper 346 



