EXPLANATION OF PLATE 19 



Fig. 1. Agasoma gravidum Gabb. No. 11245, Coll. Invert. Palae. Univ. Calif., 

 loc. 14. Natural size. 



Fig. 2. Thais packi, n. sp. Type, no. 11246, Coll. Invert. Palae. Univ. Calif., 

 1309. Natural size. 



Fig. 3. Agasoma gravidum Gabb. No. 11247, Coll. Invert. Palae. Univ. 

 Calif., loc. 14. Natural size. 



Fig. 4. AnciUa fishii Gabb. No. 11248, Coll. Invert. Palae. Univ. Calif., 

 loe. 1132. Natural size. 



Fig. 5. Agasoma gravidum Gabb. No. 11283, Coll. Invert. Palae. Univ. 

 Calif., loc. 14. Enlarged nearly 1.5 times natural sizes. 



Fig. 6. AnciUa fishii Gabb. No. 11250, Coll. Invert. Palae. Univ. Calif., 

 loc. 1131. Natural size. 



Fig. 7. AnciUa fishii Gabb. No. 11253, Coll. Invert. Palae. Univ. Calif., 

 l*>e. 52. Natural size. 



Fig. 8. AnciUa fishii Gabb. No. 11249, Coll. Invert. Palae. Univ. Calif., loc. 

 1131. Natural size. 



Fig. 9. AnciUa fishii Gabb. Same specimen as tig. (5. Natural size. 



Fig. 10. Olivella quadriplicata, n. sp. Type, no. 11251, Coll. Invert. Palae. 

 Univ. Calif., loc. 1131. Natural size. 



Fig. 11. AnciUa fishii Gabb. No. 11160, Coll. Invert, Palae. Univ. Calif., 

 loc. 1131, Natural size. 



Fig. 12. Natica (ampullina) gabbi, n. sp. No. 11250, Coll. Invert. Palae. 

 Univ. Calif., loc. 1131. Approximately twice natural size. 



Fig. 13. Thais packi, n. sp. Same specimen as fig. 2. Natural size. 



Fig. 14. Natica (Ampullina) gabbi, n. sp. No. 11255, Coll. Invert. Palae. 

 Univ. Calif., loc. 1309. Approximately twice natural size. 



Fig. 15. Natica (ampullina) gabbi, n. sp. Type, no. 11252, Coll. Invert. 

 Palae. Univ. Calif., loc 1311. Approximately twice natural size. 



Fig. 16. Natica (Euspira) ramonensis, n. sp. Type, no. 11257, Coll. Invert. 

 Palae. Univ. Calif'., loc. 1131. Approximately twice natural size. 



Fig. 17. Olivella quadriplicata, n. sp. No. 11256, Coll. Invert. Palae. Univ. 

 Calif'., loc. 14. Aj:>proximately twice natural size. 



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