MONOGRAPH OF THE EXISTING CRTNOIDS. 669" 



MTZ08T0MUM FOIJTJM VON GRAFF. 



Occurrence. — Free-living. 



Host. — Cyllometra nianca. 



Locality. — Challenger Station 192, near the Kei Islands, 140 fathoms. 



MYZOSTOMUM MEMBRANACEUJI VON GRAFF. 



Occum^ence. — Free-living. 

 Host. — Stephanometra spicata. 



Locality. — Challenger Station 208, Philippine Islands (lat. 11° 37' N., long. 

 123° 31' E.), 18 fathoms. 



MYZOSTOMUM BUCCHICHII VON WAGNER. 



Occurrence. —Free-living. 

 Host. — Antedon adriatica. 

 Locality. — Near Clemente Island, south of Lesina, Dalmatia. 



MTZOSTOMUjr CIRRIPEDIUM VON GRAFF. 



Occurrence. — Free-living. 



Host. — Metacrinus rotundus. 



Locality. — Sagami Bay, southern Japan, 70 fathoms. 



MYZOSTOMUM NANSENI VON GRAFF. 



Occurrence. — Free-living. 



Host. — This species was foimd lying loose in a jar containing a black comasterid 

 and several other comatulids. 

 Locality. — Moluccas. 



JIYZOSTOMUM JAPONICUM ai'CLENDON. 



Occurrence . — Free-living. 



Hosts. — Two ophiurans, both belonging to the family Trichasteridse, Ophiocreas 

 cedipus Lyman, and Astroceras pergamena Lyman. 



Localities. — Albati^oss Stations 3755, off southern Japan, 52 to 77 fathoms, and 

 4979, off southern Japan, 943 fathoms. 



Remarks. — It is of course possible that these myzostomes are of accidental 

 occurrence on the ophiurans, having crawled onto them from crinoids inhabiting 

 the same localities. 



MYZOSTOMUM SMITHI m'cI.ENDON. 



Occurrence. — Free-living. 



Hosts. — One or more of the local species of Calometridae. 



Locality. — Southern Japan, Suruga Gulf and Sagami Bay. 



MYZOSTOMUM WHEELERI m'cLENDON. 



Occurrence. — Free-living. 



Host. — Metacrinus rotundus. 



Locality. — Southern Japan, Suruga Oulf and Sagami Bay. 



