PLATE XXIII. 
Fernando (Pliocene) Fossils. 
(Unless otherwise indicated all figures are natural size.) 
Fig. 1 . Spisula sisquocensis Arnold. U.S.N.M. 165292. Type. Left valve; longi¬ 
tude 120 mm. View of exterior, X h • Alcatraz asphalt mine, near 
Sisquoc (4471). Characteristic of this horizon. 
Fig. 2. Clidiophora punctata Carpenter. U.S.N.M. 165302. Right valve; longitude 
36 mm. View of exterior. Graciosa Ridge, near Orcutt (4476). Also 
known recent. 
Fig. 3. Clidiophora punctata Carpenter. U.S.N.M. 165283. Left valve; longitude 
35 mm. View of interior. Graciosa Ridge, near Orcutt (4476). Also 
known recent. 
Fig. 4. Venericardia californica Dali. U.S.N.M. 165274. Altitude 29 mm. Aperture 
view. Waldorf asphalt mine (4473). Characteristic of this horizon. 
Fig. 5. Cumingia californica Conrad. U.S.N.M. 165311. Left valve; longitude 17 
mm. View of exterior, X 2. Fugler Point asphalt mine, near Gary 
(4475). Also known recent. 
Fig. 6. Spisula catilliformis Conrad var. alcatrazensis Arnold. U.S.N.M. 165291. 
Type. Right valve; longitude 128 mm. View of exterior, X Alca¬ 
traz asphalt mine, near Sisquoc (4471). Characteristic of this horizon. 
Fig. 7. Bathytoma carpenteriana Gabb var. fernandoana Arnold. U.S.N.M. 165303. 
Type. Altitude 24 mm. Aperture view. Graciosa Ridge, near Orcutt 
(4476). Characteristic of this horizon. 
Fig. 8. Phacoides annulatus Reeve. U.S.N.M. 165286. Right valve; longitude 45 
mm. View of exterior. One mile north of Schumann (4474). Common 
in the Fernando and also found recent. 
Fig. 9a. Phacoides intensus Dali. U.S.N.M. 165260. Left valve; altitude 6.5 mm. 
View of exterior, X 4. Waldorf asphalt mine (4473). Found also in 
same horizon at San Diego. 
Fig. 96. View of interior of same specimen, X 4. 
Fig. 10. Ostrea veatchii Gabb. U.S.N.M. 165282. Left valve; altitude 96 mm. View 
of exterior. One mile north of Schumann (4474). Characteristic of this 
horizon. 
148 
