Vol. 51.] AND PHYSICAL GEOLOGY OF THE WEST INDIES. 



293 



Table {continued). 



« Name. 



Author 



of 

 Species. 



Fossil : 



Recent. 



Barba- 

 dos. 



DO 



O 



a 

 m 



n 







< 

 ■A 







03 



O 

 

 a 



a 



< 



o3 



fi 



CD 



"oj 



w 



03 



en 



CD 



- 

 O 



N 

 «J 



- 

 ji 

 0Q 



h-t 



e? 



(3 

 C 

 o3 



a 



03 



O 



ao 

 03 



O 

 



a 

 33 



CD 



a 

 33 



(H 

 In 



CD 



-5 



CD 

 2 



33 



03 



a 



03 

 P 



Ph 





 ;-a 

 '8 



CS 



CM 



4 



a 

 1— 1 



a 



is 

 



CD 



pq 



□0 



CD 

 U 

 CD 



O 



Fam. TELMNIDiE. 



Tellina (Musculus) radiata 





- 







Splgr 



Say 



„ (Peronaoderma) rubescens ... 

 ,, (Arcopaaia) fausta 



— 



— 



- 











Sol 



Hani 













Pult 



- 



- 















,, (Metis) ephippium , 



Splgr 





















(Percentages of distribution have not been given : these can alone be use- 

 fully compiled by a specialist on the Mollusca, for the above species are 

 certainly not of equal value. The list is, however, conclusive as to the fauna 

 being practically identical with that of the present West Indian seas.) 



IV. The Occurrence op the Oceanic Series in Cuba. 



The fact that the Oceanic deposits were known only in Barbados, 

 and in a less typical form in Trinidad, to some extent detracted 

 from their significance. For, though Barbados is not itself a 

 volcanic island, it occurred near a great volcanic line, and thus great 

 local oscillations might easily have occurred. The absence of the 

 deep-sea deposits in the central West Indian Islands seemed to show 

 that their geographical range was but limited. The only known 

 bed approximating to this type in the central West Indies was the 

 Pteropod Marl of Jamaica, which, though clearly of deep-sea origin, 

 did not imply any such abyssal conditions as do the radiolarian 

 oozes. 



I was, therefore, much interested when examining the collection 

 of coral rocks formed by Prof. Crosby in Cuba, and now preserved 

 in the Museum of the Boston Society of Natural History, to find 

 among them some specimens of radiolarian marls. The specimens 

 illustrated Prof. Crosby's well-known paper 1 on the raised reefs of 

 Cuba, but this contained no information as to the mode of occur- 

 rence of the marls. The author, however, kindly described to me 

 their position, which is at the base of the coral-rocks ; the two 

 series seem to occur in exactly the same relative positions as the 



1 W. O. Crosby, ' On the elevated Coral Eeefs of Cuba,' Proc. Boston Soc. 

 Nat. Hist. vol. xxii. (1883) pp. 124-130. 



