REPORT ON THE CRINOIDEA. 



391 



only been found at thirty -four Stations. These have yielded thirteen species, representing 

 five different genera, as shown in the following lists. 



Table shoiving the Number of Times that Stalked Crinoicls have been Dredged 



in the Abyssal Zone. 



Rhizocrinus alone, 

 Pentacrinus alone, 

 Bathycrinus alone, 

 Hyocrinus alone, 

 Bathycrinus and Hyocrinus, 

 Pentacrinus and Metacrinus, 

 Rhizocrinus and Bathycrinus, 

 N.B. — All the doubtful cases are included in this list. 



15 

 8 

 6 



1 V =34 

 2 

 1 

 1 



Table showing the Species of Stalked Crinoids which occur in the Abyssal Zone. 



