EXPLANATION OF PLATE 38 



Fig. la. Meretrix hornii Gabb, X 2. 



Fig. lb. Meretrix hornii Gabb, X 2. Showing hinge. U. C. Locality 672. 

 Fig. 2a. Tivela packardi, n. sp., X 2. 



Fig. 2b. Tivela packardi. n. sp., X 2. View showing hinge. Cotype from 

 U. C. Locality 672. 



Fig. 3. Marcia (?) conradi, n. sp., X 2. Type specimen. 

 Fig. 4. Epitoniani tejonensis, n. sp., X 2. Type. 

 Fig. 5a. Crepidula inornata, n. sp., X 3. 



Fig. 5b. Crepidula inornata, n. sp., X 3. View showing deck. 

 Fig. 6. Natica gesteri, n. sp., X 2. 



Fig. 7. Amanropsis alveata (Conrad), X 2. The young individual 

 figured shows the fine spiral threads plainly. The umbilical chink is not 

 so prominent in older individuals. U. C. Locality 672. 



Fig. 8. Natica uvasana Gabb, X 1- 



Fig. 9a. Natica hannibali Dickerson, X 1- This large specimen shows 

 the peculiar callus on the inner lip better than the type. Specimen is from 

 the Tejon group near Domengine Creek, Fresno County, Cal. 



Fig. 9&. Natica hannibali Dickerson, X 1- Back view of same specimen. 



Fig. 10a. Actaeon moodyi, n. sp., X 2. Aperture view of type. U. C. 

 Locality 672. This form is also found at the type locality of the Tejon group. 



Fig. 10&. Actaeon moodyi, n. sp., X 2. Back view of type. 



Fig. 11. Mitramorph-a parsoni, n. sp., X 2. Type specimen from U. C. 

 Locality 672. 



Fig. 12. Cerithiopsis dumblei, n. sp., X 3. 



I 508 J 



