PLIOCENE FORMATIONS. 27 



ritus, P. lavjsoni, P. lecontel, P. merriami. P. ii utter >, P. ojnintia, P. moimi, P. 

 paruieleei, P. pedroanu»^ P. purisimaensU, P. rlveral, P. stearnnii^ P. turner!., 

 P. veatchii, P. ivaMurnei, P. wattsi, and P. wattsi var. niorani. 



The following- species have been found in the Piirisinia formation at different 

 localities in the Santa Cruz quadrangle: 



List of Piirifilma formation (lower Plioceiiu) fossih. 



[Those species marked with an asterisk i,*) are supposed to be eharaeteristic: those followed by (M) are also fouud in the 

 Mioeene; those by (N) in the Mereed, and those by {h are still living.] 



EcniXOIDEA. 



Astrodapsis n. sp. Merriam. 

 Scutella interliiieata Stimpson. 



BRACHIOPdDA. 



Glottidia albida Hinds. 



PELECYPODA. 



Area eanalis Conrad (M). 



Area trilineata Conrad CSV). 



Callistaangiistifrons Conrad (M) (/?). 



Cardium meekianum (jabb (M ?). 



*Cardiiim meekianum Gabb n. var. A. 



Cliione giiidia Broderip and Sowerby {I). 



Cliione sp. 



Clidiophora punctata Conrad (I). 



Corl)ula .«p. 



Cryptoniya ealifornica Conrad (/). 



*Cryptnmya n. sp. A. (a£f. ealifornica Conrad). 



Do.siiiia ponderosa Gray (/). 



Dosinia sp. 



* Lrevicardium n. sp. (aff. sulistriatum Conrad). 

 Leda (cf. ) fossa Baird (7?). 



Leda taphria Dall (/). 



Maeoma calcarea Gmelin (?). 



Maeoma inquinata Desliayes (I). ^ 



Maeoma nasuta Conrad (/). 



Mactra ealifornica Conrad (I). 



Mactra hemphilli Dall (/). 



Modiolus rectus Conrad (/I. 



Moerella salmonea Carpenter (I). 



Mytilus matliewsonii Gabb (M). 



Nucula castrenais Hinds (?) . 



Panomya ampla Dall (/). 



Panopea generosa Gould (/). 



* Pecten hastatus Sowerby (smootli var.). 



* Pecten liealeyi n. sp. 

 Pecten nutteri n. sp. 

 Pecten oweni n. sp. 



* Pecten purisimaensis n. sp. 

 Phacoides aeutilineatus Conrad (M). 

 Phaeoides niittalli Conrad (/). 

 Saxidomus gibbosus Gabb (M). 



PELECYPODA — continued. 



Siliqua lucida Conrad (/). 

 Siliqua jiatula Dixon (/). 

 Spisula catilliformis Conrad (7). 

 Spisula falcata Gould (I). 

 Solen sicarius Gould. 

 Tapes staleyi Gabb (N) (M?). 

 Tapes tenerrima Carpenter (/). 

 Tellina (cf. ) eongesta Conrad (M). 

 *Tellina n. sp., A. 

 Tresus nuttalli Conrad (M). 

 Venus pertenuis Gabb (M). 

 Yoldia cooperi Gabb (/). 

 Yoldia scissurata Dall (/). 

 Zirphtea gabbi Tryou (/). 



gastehopoda. 



Admete gracilior Carpenter (N). 



Astyris californiana Gaskoin (/). 



Astyris gausapata Gould (/). 



Astyris richthofeni Gabb (N). 



Bittium asperum Gabb (/). 



Boreotrophon pacificus Dall [l). 



*Buccinum n. sp. A. 



*Calliostoma n. sp. A. 



Chrysodomus liratus Martyn (I). 



Chrysodomus tabulatus Baird U). 



*Chrysodomus n. sp. A, 



Crepidula i)rinceps Conrad (M) (N). 



Crepidula navieelloides Nuttall (I). 



Crepidula (cf. ) onyx Sowerbj' (/). 



Crepidula rugosa Nuttall. 



*Dolichotoma n. sp. (aff. carpenteriana Gabb). 



Drillia ineisa Carpenter [l). 



*Fusus n. s-p. (aff. rugosus Trask) . 



*Galerus inornatus Gabb. 



Leptothyra paucicostata Dall (/). 



Lunatia lewisii Gould (/). 



Nassa californiana Conrad (N). 



Nassa mendica Gould [l). 



Nassa perpiuguis Hinds (/). 



Natica clausa Broderip and Sowerby [l). 



.*Neptunpa humerosa Gabb. 



