112 



FOSSIL ECHINI OF THE WEST INDIES. 



It is worthy of note that every undoubtedly Eocene species in the 

 West Indies is confined to the Eocene. These species, therefore, 

 according to present information, are excellent indicators of strati- 

 graphic position. 



OLIGOCENE. 



The Oligocene in the West Indies comprises two horizons, which are 

 typified by the Antiguan middle Oligocene and the Anguillan upper 

 Oligocene. 1 The Anguillan horizon would be referred to the Miocene 

 by many stratigraphers, because it and equivalent horizons are 

 correlated with the European Aquitanian. 



MIDDLE OLIGOCENE. 



List of species from the West Indian middle (Antiguan) Oligocene. 



Names of species. 



Localities. 



Notes. 



Cidaris peloria Jackson 



Sismondia anguillae Cotteau . 



Porto Rico, Collazo shale and base 



of "Arecibo" formation. 

 Antigua 



? Anomalanthus gregoryi Lambert . 

 Clypeaster concavus Cotteau 



Antigua. 

 Antigua. . 



lanceolatus Cotteau. 



antillarum Cotteau . . . 

 planipetalus Cotteau . . 



cryptopetalus Jackson, 

 cotteaui Egozcue 



Antigua. . 



Antigua. . 

 Antigua. . 



Antigua. 



Antigua (fide Lambert). 



batheri Lambert, 

 parvus Michelin. 



Antigua. 

 Antigua. . 



oxybaphon Jackson 

 Echinarachnius sebastiani Jackson. 

 Echinolampas lycopersicus Guppy . 



anguillae Cotteau . . . 



Antigua; Guanica limestone and 

 Juana Diaz shales, Porto Rico. 



Porto Rico, Collazo, and San Sebas- 

 tian shales. 



Antigua (fide Lambert) , 



Antigua (fide Lambert) . . 



Paraster clevei (Cotteau) 



Eupatagus vaughani Jackson 



elegans Jackson 



? depressus Jackson 



Antigua 



Antigua. 



Porto Rico, Juana Diaz shale. 

 Porto Rico, 2 km. southwest 

 Juana Diaz. 



AlsoAnguilla for- 

 mation. 



Also Anguilla for- 

 mation and its 

 equivalents. 



Emperador lime- 

 stone, Panama; 

 ? La Cruz marl, 

 Cuba. 



Anguilla forma- 

 tion. 



Santa Clara Prov- 

 ince, Cuba. 



Also Guantanamo 

 and Matanzas, 

 Cuba; Jamaica. 



Also Guadeloupe 

 and Havana, 

 Cuba. 



Anguilla forma- 

 tion and its 

 equivalents. 



Anguilla forma- 

 tion; Jique de 

 la Argolla, Cu- 

 ba; Bissex Hill 

 formation, Bar- 

 bados. 



Also Anguilla. 



of 



'For discussion, see T. W. Vaughan, U. S. Nat. Mus. Bull. 103, pp. 198-212, 582-586, 1919. 



