8-1 ORIGIN OF THE WEST INDIAN ECHIXID FAUNA. 



refer for details to the List I have given in the Challenger Report * of known 

 species of Echini, where the bathymetrical, geographical, and geological 

 range is given as far as known at that time. To this List should be added 

 the deep-sea species collected by the " Gazelle " and described by Studer, 

 and the necessary additions and modifications which are suggested in this 

 Report. 



The following Table, containing a complete list of all the West Indian 

 species of Echini, extended so as to include the few species which thus far 

 have not yet been found in the West Indian district, has been prepared, for 

 the sake of comparing the West Indian species with the Panamic Echini, 

 and with the representative species of Echini found in the American de- 

 posits of the Post-Pliocene, Miocene, Eocene, Cretaceous, and Jurassic periods. 

 In the column of the principal localities, the present and past geographical 

 and geological extension of the genus is given, to allow a ready comparison 

 of the actual and former distribution of the present West Indian genera to 

 be made. The geographical range of each species is also given. When 

 several representative species have been described, they have all been 

 enumerated. 



• Report on the Echinoidea : Report on the Scientific Results of the Voyage of H. M. S. Challenger, 

 Pt. IX., p. 208, L881. 



