. Bulletin of the United States Geological Survey--The Santa Clara Valley, Puente Hills and Los Angeles Oil Districts. iew of imperfect specimen. Same locality as fig. 1. Known also from the Pleistocene of San Pedro. Los Angeles (!;. 11. Priene oregonensis Redfield var(?) angelensis Arnold. L64975. Baca view of imperfect and slightly contorted specimen; longitude 71 mm Same locality as fig. 3. Common in the lower Pliocene of the Pacific coast. It is the precursor of the Recenl Priene oregonensis L2. Murex eldridgei Arnold. L64955. Type. Back view; longitud
. Bulletin of the United States Geological Survey--The Santa Clara Valley, Puente Hills and Los Angeles Oil Districts. iew of imperfect specimen. Same locality as fig. 1. Known also from the Pleistocene of San Pedro. Los Angeles (!;. 11. Priene oregonensis Redfield var(?) angelensis Arnold. L64975. Baca view of imperfect and slightly contorted specimen; longitude 71 mm Same locality as fig. 3. Common in the lower Pliocene of the Pacific coast. It is the precursor of the Recenl Priene oregonensis L2. Murex eldridgei Arnold. L64955. Type. Back view; longitude 2 I mm.; twice natural size. Known only from the same locality as fig. 1. Near the Recenl .1/. inaisa 13. Pecten (Chlamys) hastatus Sowerby var. strategus Dall. Collection of Delos Arnold. Left valve: altitude 36 mm. Pliocene, Santa Barbara Also found in the Pliocene of southern 14. Pecten (Chlamys) bellilamellatus Arnold. Type. Kighi valve; altitude La mm. Pliocene. Pacific Beach, San Diego. Known only from this horizon at this S. GEOLOGICAL SURVE LLETIN NO. 309 PL. XL. PLIOCENE PELECYPODA AND GASTEROPODA. PLATE XLI. Tertiary Turritellas. (All figures natural size.) Fig. 1. Turritella pachecoensis Stanton. 165002. Back view of imperfectspecimen; altitude 59 mm. Eocene, Rock Creek, Los Angeles species is supposed to be characteristic of the Martinez formal ion(lower Eocene.) Fig. 2. TuiriUlla uvasana Conrad. 164974. Wax cast, back view; altitude41 mm. Sespe Canyon, Ventura County. Supposed to be character-istic of the Tejon formation (middle Eocene). Fig. 3. Turritella uvasana Conrad. 165004. Back view of imperfect speci-men; altitude 44 mm. Eocene, Rose Canyon, San Diego County. Fig. I. Turtriella ineziana Conrad (H T. hoffmanniG&bh). 164964. Lower]Miocene, supposed equivalent of the Fourfork formation, Chaffee Can-yon, southwest of Pirn. Ventura County. Supposed to be characteristicof
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