192 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Sek. 



PLATE 31 



Fig. 1. Littorina oligocenica, new species, X4. Type. 



Fig. 2. Marginella pacifica, new species, X4. Type. 



Fig. 3a. Surcula dickersoni (Weaver), X2. 



Fig. 3b. Surcula dickersoni (Weaver), X2. 



Fig. 4. Fusinus gesteri, new species, X2. Type. 



Fig. 5. Nyctilochus, species, X3. 



Fig. 6a. Conus ruckmani, new species, X2. Type. 



Fig. 6b. Conus ruckmani, new species, X2. 



Fig. 7a. Epitonium washingtonensis Weaver, X3. Type. 



Fig. 7b. Epitonium washingtonensis Weaver, X3. 



Fig. 8. Eulima clarki, new species, X4. Type. 



Fig. 9a. Seraphs andersoni, new species, XL Type. 



Fig. 9b. Seraphs andersoni, new species, Xl- Cotype. 



Fig. 10a. Hipponyx arnoldi, new species, X2. Type. 



Fig. 10b. Hipponyx arnoldi, new species, X2. Cotype. 



Fig. 10c. Hipponyx arnoldi, new species, X2. 



Fig. lOd. Hipponyx arnoldi, new species, X2. 



Fig. 11a. Acmsea simplex, new species, X3. Type. 



Fig. lib. Acmaea simplex, new species, X3. 



Fig. 12a. Hipponyx ornata, new species, X2. Type. 



Fig. 12b. Hipponyx ornata, new species, X2. 



Fig. 13a. Patella subquadrata, new species, X3. Type. 



Fig. 13b. Patella subquadrata, new species, X3. 



