MONOGRAPH OF THE EXISTING CRINOIDS. 661 



MYZOSTOMUM TESTUDO VON GRAFF. 



Occurrence. Free-living. 



Host. Nemaster rubiginosa. 



Locality. Blake Station 285, off Barbados, 13 to 40 fathoms. 



MYZOSTOMUM CHELONIUM M'CLENDON. 



Occurrence. Free-living. 



Host. One or more of the local species of Calometridse. 



Locality. Southern Japan, Suruga Gulf and Sagami Bay. 



MYZOSTOMUM CHELONOIDIUM M'CLENDON. 



Occurrence. Free- living. 



Host. One or more of the local species of Calometridse. 



Locality. Southern Japan, Suruga Gulf and Sagami Bay. 



MYZOSTOMUM LUTKENI VON GRAFF. 



Occurrence. Free-living. 

 Host. Comanthus parvicirra. 

 Locality. Tonga Islands. 



MYZOSTOMUM PALLIDUM VON GRAFF. 



Occurrence. Free-living. 



Hosts. Comatula Solaris, Comanthus parvicirra, and an undetermined conia- 

 tulid referred to " Comatula.' 11 



Locality. Near Bohol, Philippines. 



MYZOSTOMUM MARGINATUM VON GRAFF. 



Occurrence. Free-living. 

 Hosts. Nemaster iowensis and N. dwcoidea. 



Localities. Blake Station 155, off Montserrat, 88 fathoms; and Blake Sta- 

 tion 203, off Martinique, 96 fathoms. 



MYZOSTOMUM GRAFFI NAN8EN. 



Occurrence. Free-living. 

 Host. Hathrometra prolixa. 

 Locality. 



MYZOSTOMUM BREVU'ES VON GRAFF. 



Occurrence. Free-living. 



Host. Crinometra, sp. ; von Graff states that the host is Antedon poutalesii, 

 but this species has not been determined with certainty. 

 Locality. Off Carriacou, Grenadines, 163 fathoms. 



MYZOSTOMUM CARI-ENTERI VON GRAFF. 



Occurrence. Free-living. 

 Host. Hathrometra prolixa. 



Localities. Triton Station 5, south of the Faroe Islands (lat. 60 11' 25" and 

 60 20' 15" N., long. 8 15' 00" and 8 08' 00" W.), 285 to 433 fathoms; off eastern 



