Studies in Geology, No. 3 



Plate I. 



Fig. I. Teiebra gausapata var. herviderana Spieker, x2. 



2. Terebra tuberosa (Nelson), x2. 



3. Conns bocapanensis Spieker, x2. 



4. Conns berryi Spieker, X2. 



5. Conns cacnminatns Spieker. 



6. Conus molis var. bravoi Spieker. 



7,8. Calliostoma (Entrochns) nodnlifernm Nelson. x2. 



9. Marginella incrassata Nelson. 



10, II. Solenosteira alternata (Nelson). 



12. Phos ( ?) latirugatns Spieker. 



