CONTRIBUTION TO THE PALEONTOLOGY OF TRINIDAD. 109 



4. Spondylus sp. indet. Height of fragment 31 mm. Soldado Rock. Lienitic Enr P n* 4i 



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



6. Perna obhqua 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 " Hurunii 



Venezuela. Probably Turonian ' p ' . 



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



9. Modiola cf. alabamensis Aldrich. Length 23 mm. Soldado Rock. Lignitic Eocena l\ 



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



ixccsDX • ••• • •• » » • •••••••■ 



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 



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



Length 22 mm. Brighton. Oligocene 



15. Area (Cunearca) chemnitzioides n. sp. From a gutta-percha impression showintc sur- 

 face sculpture. Same locality * 



46 

 46 



46 



44 



44 



44 



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



PLATE VIII. 



Fio. 1. Area (Cunearca) chemnitzioides n. sp. From a gutta-percha impression, showing 



p»r 



cardinal area. Striations exaggerated by erosion. Brighton. Oligocene .'. 44 



2. Area (Argina) biUingsiana n. sp. Length 31 mm. Brighton, Trinidad." Upper 



Oligocene ll 



3. 

 4. 



45 



Area (Argina) biUingsiana n. sp. Interior of same shell 45 



Area (Argina) brightonensis n. sp. Length 24 mm. Brighton. Oligocene! !!!!!!!' 46 



5. Area (Argina) brightonensis n. sp. Same shell, lateral view 46 



6. Area (Argina) brightonensis n. sp. Interior of same shell showing hinge characters! ! 46 



7. Area (Argina) panaensis n. sp. Length 24 mm. Gulf of Paria between La Brea and 



ban Fernando. Recent 



8. Area (Argina) pariaensis n. sp. Interior of same'sheli showing hinge' characters ! ! ! ! 47 



in a 0, VyV" 10 ) Pariaensis n. sp. Lateral view of same shell 



Oli ocen^ 8heUoniana n * 8 P' Len gt* 15 mm. Brighton, Trinidad. ' Upper 



\ o £ rCa fi Noe ! ia ) s heldoniana n. sp. Interior of same valve !!!!!!!!!! 



Eocene " Rathbui1, Len S th 29 mm - Soldado Rock, Gulf of Paria. Midway 



43 

 43 



48 



14. 



Venericardia crucedemaionis n. sp. Length app'ro'xim'a'teiy ' 7 mm." Soldado ' Rock. 

 Ldgnitic Eocene 



49 



51 



ifi' v e J^f aT i ia V l ? ni ? osta Lamarck. ' ' Width 55 ' mm! ' Soldado Rock! ' Midway Eocene 51 



waTu aS Vlanxcosta^m. Interior mould with fragmentary margin of exterior. 



Width 48 mm. Soldado Rock. Midway Eocene 



51 



is' r/Sf « • **2 { hal ™ s ?P l . e to<> n. sp. Height 19 mm. Soldado Rock. Midway Eocene 53 



U P ' £. In - ter L or mould - Showing alternating teeth. Length of fragment 70 

 19 C/nTo Between La Brea and San Fernando, Trinidad. Probably Oligocene 50 



™J 1 m i , me 8 P ecies a s above. Another mould showing general form, 

 medial sulcus, and anterior muscular scar 



50 



PLATE IX. 



2* rwL^; AS-; He \ ght ?° mm ' Tril »dad. Probably Oligocene 50 



™S- ( Cardltame ™) Virginia n. sp. Length 13 mm. Interior mould showing 



3 CnrE r% of s cul P tu «\ Brighton. Oligocene 53 



4 nZ!t s fc M ar **tomera) Virginia n. sp. Interior mould of above shell 53 



SeSceous?' SP ' ^^ Young ' ^^ 8 mm. Coycuar, Venezuela. ' ' Basai Upper 



5 * C ^ t ^ ra ( e TH ^ l ' < ^^)' '«w^^ n. sp. Height 11 mm. Brighton, 

 6. Cardium( Trigoniocardia) Carolina n.' sp.' ' Same'sheli. 



Trinidad. 



54 



54 

 Lateral view 54 



pM/ nM .j ; . ' "**'*«> "• op. oaiiie siieu. i^aierai view 



Upper Cretaceous™*'* *' 8P * Length 24 mm ' Near c °y cuar » Venezuela. Basal 



54 



8. Meretrix cf . nuttalliopsis Heilp'rin.' ' Length 26* mm'. ' Soldado Rock.' ' Lignitic' Eocene! 55 





