REPORT OX THE ECHINOIDEA. 



237 



BuissiNA (8 species). 



Rhinobrissus, 1. 

 Agasmzia, 1. 

 Brissus, 1. 



Schizcoster, 3. 

 Penaster, 1. 

 Moiropsis, 1. 



Among these coutiueutal species there are already quite a number of the deep-sea 

 genera, or of genera characterised by their ancient geological facies.' Those which 

 appear are — 



Salenia. 



Porocidaris. 



CoeloiJileurus. ' 



Phormosoma. 



Asthenosoma. 



Temnechinus. 



Trigonocidaris. 



Catopygus. 



Conoclypus. 



Neolampas. 



Pcd<^otrop)ns. 



Linopneustes. 



Paleopneustes. 



Periaster. 



The analysis of the supplementary continental table shows us that the forty-six 

 species of the truly continental fauna are associated below the 100 fathom line with no 

 less than thirty-seven littoral species, eleven of which even extend beyond the usual limits 

 of the continental species far into the oceanic fauna— 



Abyssal or Oceanic Species. 



