AENOLD — THE PALEONTOLOGY AND STRATIGRAPHY OF SAN PEDRO. 85 



MOLLUSCA (Continued). 



390. cidaris A. Adams 334 



391. peramabilis Carpenter 335 



Family LXXX V . Cydostremalidce 335 



Genus Vitrinella C. B. Adams 335 



392. williamsoni Dall 335 



SUPERFAMILY ZYGOBRAXCHIA 336 



Family LXXX VI. ITaliotidce 336 



Genus Haiiotis Linne 336 



393. fulgens Philippi 336 



Family LXXX VII. Fissurellidm 337 



Subfamily Fissurellideinae 337 



Genus Lucapiua Gr.\y 337 



394. crenulata Sowerey 337 



Subfamily Emarginulince 337 



Genus Fissuridea Swainson 337 



395. aspera EscH 338 



396. iuEequalis Sowerey 338 



397. murina (Carpenter) Dall 339 



Genus Clypidella Swaixson 339 



398. bimaculata Dall 339 



399. callomarginata Carpenter 340 



Genus Fissurella Beuguiere 340 



400. volcano Reeve 340 



Genus Puncturella Lowe 341 



401. cucuUata Gould 341 



402. galeata GonLD 341 



SUBCLASS ISOPLEDRA 342 



Order Polyplacophora 342 



SUPERFAMILY EOGHITONIA 342 



Family LXXX VIII. Chiionida 342 



Genus Ischnochiton Gray 342 



403. regularis Carpenter 342 



Genus Cryptochiton Middendorfe & Gray 342 



404. stelleri Middendorff 342 



SUPERFAMIL Y OPSICHITONIA 343 



Family LXXXIX. MopaliidcE 343 



Genus Mopalia Gray 343 



405. cillata Sowerey 343 



ARTHROPODA .* 344 



CLASS VIII. CRUSTACEA 344 



SUBCLASS EUCEUSTACEA 344 



SuPERORDER ClRRlPEDlA 344 



Order Thoracica 344 



Family XC. Balanidce 344 



Genus Balanus Lister 344 



406. concavus Bronn 344 



SaPERORDER Malacostraca 345 



Order Decapoda 345 



Suborder Brachycra 345 



Family (Subtribe) XCI. Cancroidea 345 



Section Cancrini 345 



Genus Cancer Linne 345 



407. breweri Gaee 345 



VERTEBR ATA 346 



CLASS IX. PISCES 346 



Order Elasmoeranchii 346 



Suborder Selachii 346 



Family XCI I. Trygonida: 346 



Genus Urolophus 346 



408. halleri (?) Cooper 346 



