6 FOSSIL ECHINI OF THE WEST INDIES. 



seen from the Island. 1 They are all probably from strata of Eocene 

 age (Cambridge formation?), excepting Clypeaster cotteaui, which is 

 apparently Oligocene. 



R. T. Hill, in his Geology and Physical Geography of Jamaica 

 (1899, Bull. Mus. Comp. ZooL, vol. 34), mentions having a few Echini 

 from Jamaica. Under the Blue Mountain series, Cretaceous (p. 

 118), he gives Salenia, but without specific name. Under the Cam- 

 bridge formation, Eocene, with lists of other groups of fossils, he notes 

 (p. 128) the occurrence of the following Echini: Scutellina from Cam- 

 bridge and Catadupa; Acrocidaris from Catadupa; Rapinot pneustio 

 [apparently a clerical error for Macropneustes] from Great River; 

 Diplopodia and Echinolampas from Great River; and Echinanthus 

 [probably Clypeaster] from Retrieve. Mr. Hill states in a note that 

 these several echinoids are in his own collection or in the collection of 

 the Institute of Jamaica. He further remarks that Macropneustes and 

 Pygorhymchus have also been collected from the Cambridge formation, 

 Eocene, at Mountain Spring, St. Elizabeth, and Maroontown. 



DOMINICAN REPUBLIC. 



List of Fossil Echini occurring in the Dominican Republic, Island of Haiti. 



Species. 



Cidaris sp. a 



Cidaris melitensis Wright, spines only 



Echinopedina cubensis Cotteau 



Clypeaster concavus Cotteau 



Clypeaster caudatus, sp. nov 



Clypeaster dalli (Twitchell) 



Brissopsis antillarum Cotteau 



Oligocene. Miocene. 



X 



X 

 X 



Pliocene. 



This list of fossil Echini from the Dominican Republic includes 

 specimens recently collected by Dr. Carlotta J. Maury or by Dr. 

 Vaughan and Dr. Cooke. Miss Maury obtained the Echini while 

 collecting fossil molluscs in the Dominican Republic, a description 

 of which she published in 1917 in the Bulletin of American Paleon- 

 tology, Nos. 29 and 30. 



PORTO RICO. 



The Echini here listed are all from the collections made on the 

 Scientific Survey of Porto Rico by the New York Academy of Sciences, 

 the Porto Rican Government and the American Museum of Natural 

 History cooperating. The specimens were mainly collected by Dr. 

 Chester A. Reeds, with Mr. Prentice B. Hill as an assistant, in the 



1 Desor, 1858, Synopsis des Echinides, p. 299, describes Pygorhynchus jamaicensis Desor as 

 occurring fossil in Jamaica. It apparently has never been figured. 



