MONOGRAPH OF THE EXISTING CRINOIDS. 665 



MYZOSTOMUM ELONGATtJM VON GRAFF. 



Occurrence. Free-living. 



Hosts. A specimen was found lying loose in a jar with Stephanometra spicata 

 and Lamprometra protectus, and another was taken from an unidentifiable species 

 recorded as Comatula (or Antedon) triqueta. 



Localities. Near Bohol, Philippines; and Challenger Station 174, near Kan- 

 davu, Fiji, 210, 225, or 610 fathoms. 



Remarks. There is some mistake in regard to the Challenger station given. 

 The species recorded from it, Stephanometra spicata and Lamprometra protectus, 

 are both littoral and could not have occurred at any of the depths given. 



MYZOSTOMUM VERRUCOSUM VON GRAFF. 



Occurrence. Free-living. 



Host. An undeterminable species recorded as Comatula (or Antedon) triqueta. 



Locality. Near Bohol, Philippines. 



MYZOSTOMTTM DENTATUM VON GRAFF. 



Occurrence. Free-living. 



Hosts. Heterometra crenulata; another specimen was found lying loose in a 

 jar containing Comatula Solaris, Comanthus bennetti, and five endocyclic 

 comatulids. 



Localities. Challenger Station 186, Prince of Wales Channel. Torres Strait, 

 8 fathoms ; and the Moluccas. 



MYZOSTOMUM FIMBRIATUM VON GRAFF. 



Occurrence. Free-living. 

 Host. Heliometra glacialis. 



Locality. Challenger Station 48, Le Have Bank (lat. 43 04' N., long 64 

 05' W),51 fathoms. 



MYZOSTOMUM EXCISUM VON SRAFF. 



Occurrence. Free-living. 



Hosts. Coccometra hagenii, and a species recorded as Antedon impinnata. 

 Localities. Off Alligator Reef, Florida, 96 fathoms; and North Bay, Mau- 

 ritius, 15 fathoms. 



MYZOSTOMUM TRREGULARE VON GRAFF. 



Occurrence. Free-living. 



Hosts. Comactinia echinoperta and C. meridionalis. 



Localities. West of Tortugas; " U. S. Coast Survey, 100 fathoms"; Blake 

 Stations 45. northwest of the Tortugas. 101 fathoms; 203, otf Martinique, 10 to 27 

 fathoms; and 249, off Grenada, 2G2 fathoms. 



MYZOSTOMUM CARIRBEANUM VON GRAFF. 



Occurrence. Free-living. 

 Host. Uncertain. 

 Locality. Caribbean Sea. 



