STANTON : THE MARINE CRETACEOUS INVERTEBRATES. 



EXPLANATION OF PLATE VI. 



PAGE 



PLEUROMYA LATISULCATA Stanton ... 25 



Fig. i . Right valve of the type. 



Fig. 2. Dorsal view of same. 

 MARTESIA ARGENTINENSIS Stanton . . 27 



Fig. 3. Dorsal view of large specimen, enlarged. 



Fig. 4. Left valve of small specimen, enlarged. 

 TURNUS DUBIUS Stanton ..... 27 



Fig. 5. Part of a tube with shell in place, enlarged two diameters. 



Fig. 6. Another view of same specimen. 



Fig. 7. A left valve, enlarged two diameters. 



Fig. 8. Dorsal view of another specimen, enlarged two diameters. 

 DENTALIUM (L^VIDENTALIUM) LIMATUM Stanton ...... 28 



Fig. 9. A large specimen with most of the shell removed. 

 LUNATIA CONSTRICTA Stanton ...... 31 



Fig. 10. Aperture view of the type. 



Fig. 1 1 . Dorsal view of same. 

 LUNATIA PUEYRRYDONENSIS Stanton ........ 32 



Fig. 12. Dorsal view of the type. 

 APORRHAIS PROTUBERATUS Stanton ........ 32 



Fig. 1 3. Aperture view of an average specimen with part of the shell 

 and the callus of last whorl destroyed. 



Fig. 14. Aperture view of another specimen showing the callus boss and 

 more of the sculpture. 



Fig. 15. Dorsal view of same specimen. 

 CINULIA AUSTRALIS Stanton .... . 34 



Fig. 1 6. Dorsal view, enlarged two diameters. 



Fig. 17. Aperture view of same specimen. 



TORNATEI.L/EA PATAGONICA Stanton ........ 34 



Fig. 1 8. Dorsal view of one of the types, enlarged two diameters. 

 Fig. 19. Aperture view of another specimen, enlarged two diameters. 

 All figures are of natural size unless otherwise stated. 



(VOL. iv) 



