FOSSIL CORALS FROM WEST INDIES WELLS 



77 



tlie trabeculae of the inner ends of the septa. Endothecal dissepi- 

 ments well developed. 



Type.—V.S.H^M. no. 74481. 



Occurrence. — Four specimens are from the base of the rudistid 

 limestone, where it overlies the Trappean shales about midway be- 

 tween Cambridge and Catadupa in the railway cut, Jamaica 

 (Trechmann collection). 



Remarks. — This species is distinguished by the unusually large 

 number of septa and relatively large corallites. It is close to R. nutriw 

 de Fromentel from the Senonian of France, a species having slightly 

 smaller corallites and fewer septa. Gerth (1928, p. 5) has described 

 as Rhahdophyllia sp. a form from the Upper Cretaceous of Cura- 

 sao — from beds that he considers equivalent to those from which the 

 present species comes — which may be very close to, or identical 

 with, the present species, although he says that an inner (dissepi- 

 mental) wall separates it from other Upper Cretaceous species of 

 the genus. 



Genus DICTUOPHYLLIA Blainville, 1830 



DICTUOPHYLLIA CONFERTICOSTATA (Vaughan) 



Diploria conferticostata Vaughan, 1899, p. 239, pi. 39, figs. 1-3. 

 Leptoria conferticostata Vaughan, 1919, p. 194. 

 Leptoria conferticosta Felix, 1925, p. 90. 



Diploria crassolamcJlosa Duncan, in Duncan and Wall, 1865, pp. 7, 12; 1868, 

 p. 24. 



Ideotype.—U.S.^.M. no. 74477. 



OccutTence. — The four specimens in the Trechmann collection are 

 from the following localities in Jamaica : Rudistid limestone, below 

 Catadupa Station; limestone, Cambridge-Catadupa railway cut; 

 dark limestone near igneous intrusion, Mooretown. 



Remarks. — This species has been adequately described and figured 

 by Vaughan (1899). The specimens from the Trechmann collection 

 are in close accord with Vaughan's description and figures. They 

 are all rounded, subgiobose forms with the following measurements: 



Vaughan noted a very close comparison between this species and 

 L. flexuossissima (d'Achiardi) from the Eocene of San Giovanni 



