PLATE VII 
Page. 
Figs. 1-3. Artica compacta (White)____ 17 
Fig. 4. Meretrix leonensis? (Con.) 18 
Fig. 5. Fistulana ruperti n. sp 19 
Fig. 6. Tubes of Fustulana ruperti 19 
Fig. 7. Stearnsia robinsi White 17 
Figs. 8, 9. Tapes austinensis n. sp 19 
