REPORT ON THE ASTEROIDEA. 



xv 



B. Bathymetrical Range of the Species. 



I. Challenger Expedition — 



(1.) Littoral Zone ...'.*..... 687 

 (2.) Continental Zone . . . ". '. '. . . .090 



(3.) Abyssal Zone ......... 692 



II. "Porcupine" Expeditions — 



(1.) Littoral Zone ......... 695 



(2.) Continental Zone ......... 695 



(3.) Abyssal Zone ......... 696 



III. " Knight Errant" Expedition— 



(1.) Littoral Zone ......... 697 



(2.) Continental Zone ......... 697 



(3.) Abyssal Zone ......... 697 



IV. " Triton" Expedition— 



(1.) Littoral Zone ......... 698 



(2.) Continental Zone ......... 698 



(3.) Abyssal Zone ......... 698 



Tablejshowing the known Bathymetrical Range of the Genera of Asteroidea collected by the Challenger 



in each of the great Oceanic Areas ........ 699 



C. Nature of the Sea-bottom on which the Asteroidea collected by the Challenger were 



FOUND, WITH AN ENUMERATION OF THE SPECIES OCCURRING ON EACH DEPOSIT. 



702 

 702 

 703 

 704 

 704 

 704 

 705 

 705 

 705 

 706 

 707 

 709 

 709 

 709 

 710 

 711 

 711 

 712 



