180 STUDIES IN GEOLOGY, No. 3 



II. 



Figs. 1,2. Nassa zorritensis (Nelson). 



3. Triumphis solida (Nelson) . 



4. Murex laquoratus Spieker. 

 5,6. Pyrula peruviana Spieker. 

 7,8. Cypraea angustirima Spieker. 



9. Cerithium infranodatum Spieker. 



10. Cerithium grillanum Spieker. 



11. Potamides ormei var. infraliratus Spieker. 



12. Turritella altilira Conrad. 



13. Turritella alturana Spieker. 



