78 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



EXPLANATION OF PLATE 1 



Fig. 1. Leda gabbi Conrad, X3. Figured specimen is from University 

 of California Locality 672. 



Fig. 2a. Leda uvasana, new species, X2. Type. 



Fig. 2b. Leda uvasana, new species, X2. 



Fig. 3. Leda vaderensis, new species, X2. Type. 



Fig. 4. Area hornii Gabb, X2. A common species in the Tejon group. 

 Figured specimen is from University of California Locality 672. 



Fig. 5a. Glycimeris ruckmani, new species, XI. Type. 



Fig. 5b. Glycimeris ruckmani, new species, XL 



Fig. 6. Glycimeris cor Gabb, XL This is an unusually large specimen 

 of this species and is introduced for comparison with G. ruckmani, new 

 species. 



Fig. 7. Spondylus carlosensis Anderson, XL This is one of the few 

 species from basal beds of the Tejon group, type locality. 



Fig. 8. Crassatellites grandis Gabb, XI. This species is also found in 

 the Martinez group, lower Eocene. It is very abundant at some Tejon 

 localities and is one of the few large pelecypods in the Tejon fauna. 



