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



EXPLANATION OF PLATE 6 



Fig. la. Rimella simplex Gabb, XI. Cal. Acad. Sci. Locality 182. 



Fig. lb. Rimella simplex Gabb, XI. Mouth view. 



Fig. 2. Rimella elongata (Weaver), X2. 



Fig. 3a. Galeodea tuberculata (Gabb), XI. Mouth view of specimen 

 from Cal. Acad. Sci. Locality 182. 



Fig. 3b. Galeodea tuberculata (Gabb), XI. Back view of same speci- 

 men. 



Fig. 4a. Ci'^prsea bayerquei Gabb, X2. Side view of specimen from Univ. 

 of Cal. Locality 452. 



Fig. 4b. Cyprgea bayerquei, X2. Back view of specimen from Univ. of 

 Cal. Locality 452. 



Fig. 5. Cypraea mathewsonii Gabb, X2. Mouth view of specimen from 

 Cal. Acad. Sci. Locality 345. 



Fig. 6. Melania packardi, new species, X2. Type. 



Fig. 7. Melania vaderensis, new species, X2. Type. 



Fig. 8. Ficopsis remondii Gabb, X2. This species is very close to 

 Pyrula penita Conrad of the Claiborne Eocene. Specimen figured is from 

 Cal. Acad Sci. Locality 244. 



Fig. 9. Ficopsis hornii Gabb, XI. Cal. Acad. Sci. Locality 244. 



Fig. 10. Ficopsis cowlitzensis (Weaver), XI. The cotype figured is 

 from Cal. Acad. Sci. Locality 182. This form is very near F. hornii Gabb 

 as will be seen upon comparing figures. 



Fig. 11. Ficopsis cooperi Gabb, XI. Cotype from Rose Canyon, San 

 Diego County, Cal. 



Fig. 12. Ficus mamillatus Gabb, X2. This specimen from Cal. Acad. 

 Sci. Locality 244 was placed by Conrad in the genus Ficopsis. 



Fig. 13. Triforis washingtoniana, new species, X3. 



