4 FOSSIL ECHINI OF THE WEST INDIES. 



Anomalanthus gregoryi, a very interesting addition to the fauna, and 

 Clypeaster batheri. Dr. F. A. Bather, who kindly sent me the reference 

 to Lambert's paper, writes that Gregory collected in Anguilla and 

 Antigua in 1899. Besides the above authors, Michelin, Desor, Egozcue, 

 de Cortazar, J. W. Gregory, A. Agassiz, and Hill published descriptions 

 of species or lists of species from the various islands of the West 

 Indies. As noted (p. 98), Kew in a paper on fossil Echini of North- 

 eastern Mexico, records several of Cotteau's West Indian species as 

 occurring in Mexico. Excepting two species, one an Agassizia and one 

 a Macropneustes, I think the identifications are mistaken. 



GEOGRAPHICAL AND GEOLOGICAL DISTRIBUTION 

 OF WEST INDIAN FOSSIL ECHINI. 



In order to bring out the distribution of the fossil Echini in the 

 West Indies, the species are grouped here in tabular form, taking 

 up the several islands geographically, and following with a table 

 showing the geological distribution. Where I have not seen specimens 

 from the localities as listed, or, indeed, in many cases, have not had 

 specimens of the species at all, the names are marked with references 

 to foot-notes where the authority for the references is given. 



An interesting and striking fact has been pointed out by students of 

 other groups of West Indian fossils, that the species in many cases 

 bear a stronger resemblance to Australian and Indo-Pacific types 

 in the Recent fauna than they do to Western Atlantic types. This 

 resemblance in the Echini is noticeable in the cases of Cidaris peloria, 

 C. foveata, and Cidaris sp. b. (p. 19) ; the same is true of Clypeaster 

 oxybaphon. The genera Anomalanthus, Laganum, Peronella, Brissus, 

 Eupatagus, and Breynia, while occurring fossil in the West Indies, in the 

 living fauna are essentially Indo-Pacific types. The West Indian fossil 

 species of Echinolampas are more like the Recent Indo-Pacific than like 

 the living West Indian species. 



At the close of this paper, Dr. T. Wayland Vaughan gives a critical 

 study of the stratigraphical relations of the West Indian fossil Echini. 

 His extensive knowledge of the region enables him to treat this aspect of 

 the subject, whereas it would be quite beyond my technical experience. 



CUBA. 



Cuba being the largest of the West Indian islands, and collections 

 from there having been the most extensively published, has yielded 

 many species of fossil Echini. The species as listed are largely taken 

 from Cotteau's monograph on the fossil Echini of Cuba, in which 

 memoir all the species are well figured. 



