302 BULLETIN OF THE 



Eastern Fadna. Western Fauna. 



Rhyneholampas caribbiearum A. Ag. Rhyncholampas pacificus A. Ao. 

 Neolampas rostellatus A. Ag. 

 Pourtalesia miranda A. Ag. 

 Lissonotus fragilis A. Ag. 



Lovenia sp. 

 Brissus columbaris Ag. Brissus obesus Ver. 



Mcoma ventricosa Lijtk. Meoma grandis Gray. 



Plagionotus pectoralis Ag. Plagiouotus nobilis A. Ag. 



Agassizia excentrica A. Ag. Agassizia 6crobiculata Val. 



Brissopsis lyrifcra Ag. 

 Echinocardium ovatum Gray. 



" laevigaster A. Ag. 



" Kurtzii Gir. 



Schizaster cubensis D'Orb. 

 Moera atropos Mich. Mcera clotho Mien.* 



With the exception of three Panama species, all the West Coast species 

 have representatives on the Eastern Coast. The Eastern species which 

 have not as yet been found represented on the West Coast are the deep- 

 water species of Mr. Pourtales's collection, and, what is very peculiar, a 

 few species, like Clypeaster rosaceus, Echinoneus semilunaris, Echino- 

 cardium Kurtzii, and Echinolampas, belonging to genera which have a 

 most extensive range, — in fact, an almost cosmopolitan one, — are found 

 everywhere in the great Indo-Pacific belt, and its continuation on the 

 West Coast, of Africa, extending also to the temperate zones, on both 

 sides of this equatorial belt. 



The relation of the Caribbean Fauna with the existing geographical 

 distribution of Echini is shown by the accompanying faunal table (p. 

 303), including only strictly representative species. 



We have in Genocidaris maeulata and Trigonocidaris albida repre- 

 sentatives of the Temnopleuridae, thus far limited almost entirely to the 

 Indian and China seas. The littoral species having the most limited 

 bathy metrical range are those which have the widest geographical 

 distribution. They are Tripneustes ventricosus, Diadema antillarum, 

 ( Jidaris annulata, Echinomctra Michelini, Lytechinus variegatus, Mellita 

 testudinata, Encope emarginata. Some of these species extend from 

 the southern part of Brazil to the Bermudas. They all belong to 



* Astriclypeus Manni Verkill is found in Japan. Mr. VerriU did not know tho 

 exact origin of his specimen. 



