NO. 1545. NE W FOSSIL MOLL USKS FROM CALIFORNL 1—. 1 RNOLD. 545 



Fig. 7. Same species and locality as fig. 6. Pedicle valve; longitude 29 nnn. 

 7rt. View of brachial valve of same specimen. 



8. Same species and locality as fig. 6. Pedicle valve; longitude 22 nnn. 

 8«. View of brachial valve of same specimen. 



9. Same species and locality as fig. 6. Pedicle valve of a less rugose variety; 



longitude 21 mm. 

 9«. View of l)rachial valve of same specimen. 



Plate L. 



Fig. 1. Mija irunrata lAmvxws,. Gat. No. 164950, U.S.N.M. Left valve; longitude 46 

 \ mm. Pliocene (Fernando formation), Elsmere Canyon, near Newhall, Los 

 / Angeles County. Found also in the Recent fauna of the Arctic regions. 



2. Trorhita filosa Gabb. Cat. No. 164949, U.S.N.M. Slightly imperfect speci- 



men viewed from above; maximum diameter 20 nmi. ; twice natural size. 

 Same locality as fig. 1. Also found in the upper Miocene. 

 2a. Same specimen. View from the side. 



3. Fissuridea mitrina Carpenter. Cat. No. 164945, U.S.N.M. Specimen viewed 



from above; longitude 14.5 mm. ; twice natural size. Lower Pliocene, Third 

 street tunnel, Los Angeles. Also found in the Pleistocene and Recent 

 fauna of the coast. 

 3a. Same specimen; view from the side. 



4. Cancellaria fernandoensh, new species. Cat. No. 164956, U.S.N.M. Holo- 



type. Back view of imperfec^t specimen; altitude 17 mm.; twice natural 

 size. Same locality as fig. 1. A similar or identical form was found in the 

 Pliocene of the San Diego well. 



5. Tritoninrn sp. Cat. No. 164954, U.S.N.M. Back view of imperfect si^eci- 



men; altitude 20 mm.; twice natural size. Same locality as fig. 1. 



6. Pi><anla fortis Carpenter vav. angidata, new variety . Cat. No. 164959, U.S.N.M. 



Paratype. Aperture view of imperfect young; altitude 30 nnn. Same 

 locality as fig. 1. A rather common species in the Pleistocene and Plio- 

 cene of central and southern California. 



7. P(.srmia/(;W(> Carpenter var. (/nji-uto/fl, new variety. Cat. No. 164958, U.S.N.M. 



Holotype Aperture view of imperfect adult; altitude 49 mm. Same 

 locality as fig. 1. 



8. (t'l/prsea fernandoensh, new species. Cat. No. 164961, U.S.N.M. Holotype. 



^'iew from back; longitude 40 mm. So far known only from same locality 

 as fig. 1. 

 8'r. Ai^erture view of same specimen. 



9. iVttssa /iamim;', new species. Cat. No. 164946, U.S.N.M. Holotype. Aj^erture 



view of imperfect specimen; longitude 15 mm. Same locality as fig. 3. 



10. Chrysodomus cf. a.rnoldi Rivers. Cat. No. 164962 U.S.N.M. Back view of 



imi^erfect specdmen. Same locality as fig. 1. Known also from the Pleis- 

 tocene of San Pedro, Los Angeles County. 



11. Priene oregonensis Redfield var angelenm, new variety. Cat. No. 164975, 



U.S.N.M. Holotype. Back view of imperfect and slightly contorted speci- 

 men; longitude 71 nnn. Same locality as fig. 3. Conunon in the lower 

 Pliocene of the Pacific coast. It is the precursor of the recent Friene ore- 

 gonensis Redfield. 

 • 12. Miirex eldridgei, new species. Cat. No. 164955, U.S.N.]\L Holotype. Back 

 view; longitude 24 mm.; twice natural size. Known only from the same 

 locality as fig. 1. Near the Recent M. incisus Broderip. 

 13. Fecten (Chlamys) hastutus Sowerby var. strategus Dall. Collection of Delos 

 Arnold. Left valve; altitude 36 mm. Pliocene, Santa Barbara. Also 

 found in the Pliocene of southern California. 



