EXPLANATION OF PLATE XXXII. 
EOCENE FOSSILS. 
Fic. 1. Pecten proavus Arnold, Cat. No. 1649380, U.S.N.M., type. Mold of 
interior of left valve, showing portion of external surface sculp- 
ture; altitude, 88 mm. X 1. Locality No. 25; Eocene between head- 
waters of San Lorenzo River and Pescadero Creek. 
2. Terebratulina tejonesis Stanton, Cat. No. 165432, U.S.N.M. Ventral 
valve; altitude, 15 mm. X 2. Locality No. 25, same as fig. 1. Found 
also in the Martinez formation at Lower Lake, Lake County. 
2a. Same species as fig. 2, L.S.J.U., No. 1023. Dorsal valve; altitude, 11 
mm. X 2. Locality 25, same as last. 
3. Hipponyx carpenteri, new species, type, Cat. No. 1654383; U.S.N.M ‘Top 
view of nearly perfect specimen; length, 11 mm. X 38. Locality No. 
25, same as fig. 1, p. 361. 
3a. Same species and specimen as fig. 8; side view X 3. 
4, Fissurella perrini, new species, type, Cat. No. 165434, U.S.N.M. Top 
view of slightly imperfect specimen; length, 16 mm. X 2. Locality 
No. 25, same as last, p. 362. 
. Semele gayi, new species, type, Cat. No. 165435, U.S.N.M. Right valve; 
latitude, 14 mm. X 2. Locality No. 25, same as fig 1, p. 360. 
6. Tritonium newsomi, new species, type, Cat. No. 165436, U.S.N.M. Back 
view ; altitude, 16 mm. X 2. Locality No. 25, same as fig. 1, p. 360. 
7. Patella mateoensis, new species, type, Cat. No. 165487, U.S.N.M. ‘Top 
view; length, 7 mm. X 3. Locality No. 25, same as fig. 1, p. 362. 
8. Cidaris merriami, new species, type, Cat. No. 165438, U.S.N.M. Frag: 
ment of spine; length, 21 mm. X 2. Locality No. 25, same as fig. 1, 
p. 359. 
On 
