PLATE VII. 

 Pig. 1. Ostrea golfotristensis n. sp. Height of fragment 15 mm. Soldado Rock. Lignitic 



Page 



Eocene 37 



2. Ostrea pulaskensis Harris. Height 22 mm. Lateral view showing lines of growth. 



Soldado Rock. Midway Eocene 38 



3. Plicatula cf. torta Gabb. Rio Grande, Venezuela. Cretaceous 41 



4. Spondylus sp. indet. Height of fragment 31 mm. Soldado Rock. Lignitic Eocene. . . 41 



5. Pecten sp. indet. Cast of interior. Height 6 mm. Brighton, Trinidad. Oligocene 



6. Perna obliqua Lam. Young shells. Burrowing in solid rock. Height of shell 10 mm. 



Black Rock, Gulf of Paria. Recent 41 



7. Inoceramus labiatus Schloth, [plicatus (d'Orb.) Krst.] Height 55 mm. Hurupu, 



Venezuela. Probably Turonian 41 



8. Inoceramus labiatus Schloth. Same locality. Showing variations in groovings 41 



9. Modiola cf. alabamensis Aldrich. Length 23 mm. Soldado Rock. Lignitic Eocene. 43 

 10. Area (Argina) schultzana n. sp. Length 35 mm. Gulf of Paria, Brighton, Trinidad. 



Recent 46 



46 

 46 



11. Area (Argina) schultzana n. sp. Interior of same valve showing hinge 



12. Area (Argina) schultzana n. sp. Lateral view, same valve 



13. Area (Cunearca) chemnitzioides n. sp. Mould in ferruginous marl. Lateral view 



showing unequal valves. Brighton. Oligocene 44 



14. Area (Cunearca) chemnitzioides n. sp. Internal mould showing high, triangular form. 



Length 22 mm. Brighton. Oligocene 44 



15. Area (Cunearca) chemnitzioides n. sp. From a gutta-percha impression showing surface 



sculpture. Same locality 44 



16. Area sp. indet. Length of fragment 18 mm. Brighton. Oligocene 47 



