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



EXPLANATION OF PLATE 5 



Fig. la. Titrritella uvasana Conrad, X2. Mouth view of a beautiful 

 specimen from Univ. of California Locality 672. 



Fig. lb. Turritella uvasana Conrad. XI, Cal. Acad. Sci. Locality 244. 



Fig. Ic. Turritella uvasana Conrad, XI. Back view showing variation 

 in strength of spire ribbing. 



Fig. 2. Turritella uvasana bicarinata, new variety, XI. View of type 

 showing two well marked carinae, Cal. Acad. Sci. Locality 244. 



Fig. 3. Turritella uvasana Conrad, XI. This specimen from Locality 

 244 appears to be intermediate between the specimen figured as Fig. 2a 

 and specimen in Fig. Ic. 



Fig. 4. Turritella uvasana tricarinata, new variety, XI. Type. 



Fig. 5a. Naticina obliqua Gabb, X2. Cal. Acad. Sci. Locality 182. 



Fig. 5b. Naticina obliqua Gabb, X2. Mouth view of same specimen 

 figured as Fig. 5a. 



Fig. 6a. Crepidula, new species, X2. 



Fig. 6b. Crepidula, new species, X2. Back view of same specimen, from 

 Cal. Acad. Sci. Locality 182. 



Fig. 7a. Nerita cowlitzensis, new species, X2. Mouth view of type. 



Fig. 7b. Nerita cowlitzensis, new species, X2. Back view of type. 



Fig. 8a. Neritina martini, new species, XI. Type. 



Fig. 8b. Neritina martini, new species, XI. Back view of type. 



Fig. 9. Amauropsis alveata (Conrad), XI. Back view of an unusually 

 large specimen of this characteristic Tejon species. 



Fig-. 10a. Odostomia, new species, X3. Specimen from Cal. Acad. Sci. 

 Locality 183. 



Fig. 10b. Odostomia, new species, X3. View of a larger specimen. 



