Fig. 1. 
EXPLANATION OF PLATE XXXVII. 
PURISIMA AND MERCED (UPPER MIOCENE AND PLIOCENE) FOSSILS. 
Schizotherus pajaroanus Conrad, Cat. No. 165467, U.S.N.M. Left valve; 
length 72 mm. X 1. Merced formation, upper Pliocene, locality No. ° 
140, sea cliff immediately south of the mouth of Afio Nuevo Creek. 
A common form in the upper Miocene and Pliocene, originally de- 
scribed as Venus pajaroana Conrad. 
. Miopleiona oregonensis Dall, Cat. No. 165469, U.S.N.M. Aperture view 
of a specimen from which the canal has been broken; altitude, 
78 mm. X 1. Purisima formation, lower Pliocene, locality No. 189, 
Purisima Rock, 1 mile east of Ano Nuevo Point. Found in the 
upper Miocene and lower Pliocene. 
. Phacoides annulatus Reeve, Cat. No. 165470, U.S.N.M. Right valve; 
length, 50 mm. X 1. Purisima formation, lower Pliocene, local- 
ity No. 189, same as fig. 2. 
. Chrysodomus stantoni, new species, paratype, L.S.J.U., No. 1088. Speci- 
men from which canal has been broken; altitude, 79 mm. X 1. Puri- 
sima formation, lower Pliocene, locality No. 189, same as fig. 2. 
Supposed to be characteristic of.the Pliocene, p. 386. 
. Nucula (Acila) castrensis Hinds, Cat. No. 165471, U.S.N.M. Left valve; 
length, 15 mm. X 2. Purisima formation, lower Pliocene, locality 
No. 139, same as fig. 2. Also found recent. 
. Bittium asperum Gabb, Cat. No. 165472, U.S.N.M. Aperture view of 
slightly imperfect specimen; altitude, 26 mm. X 3. Purisima forma- 
tion, lower Pliocene, locality No. 1389, same as fig. 2. Also abundant 
in the upper Pliocene fauna. : 
. Littorina petricola Dall. L.S.J.U., No. 1099. Aperture view of imperfect 
specimen; altitude, 10 mm. X 1. Merced formation, upper Pliocene, 
locality No. 21, between Feld Lake and Los Trancos Creek, 23 miles 
south-southwest of Stanford University. Originally described from 
Oregon. 
. Fusus portolaensis, new species, type, Cat. No. 165473, U.S.N.M. Aper- 
ture view; altitude, 583 mm. X 1. U. S. Geological Survey locality 
No. 4665, Etchegoin formation, Coalinga district, Fresno County, p. 
380, 
