664 BULLETIN 82, UNITED STATES NATIONAL MUSEUM. 



MYZOSTOMUM LONGICIRRUM VON GRAFF. 

 Fig. 1265, pi. 41. 



Occurrence. Free-living. 



Host. Comanthus parvicirra. 



Locality. Zamboanga, Philippine Islands. 



MYZOSTOMUM WTVTLLETHOM80NI VON GRAFT. 



Occurrence. Free-living. 



Hosts. Metacrinug costatus and At . angulatus. 



Localities. Challenger Stations 192. near the Kei Islands, 140 fathoms; and 

 214, off the Meangis Islands, 500 fathoms. 



MYZOSTOMUM CIRCINATUM WHEELER. 



Occurrence. Free-living. 



Host. Endoxocrinus alternicirrus or Hypalocrinus nnresianus. 



Locality. Challenger Station 214, off the Meangis Islands, 500 fathoms. 



MYZOSTOMUM VASTUM VON GRAFF. 



Occurrence. Free-living. 



Hosts. Comactinia echinoptera and Comanthus japonica. 



Localities. Blake Stations 39, 16 miles north of the Jolbos Islands, south- 

 western part of the Yucatan Bank, 14 fathoms; and 203, off Martinique, 10 to 27 

 fathoms; and southern Japan. 



MYZOSTOMUM AGASSIZII VON GRAFF. 



Occurrence. Free-living. 



Hosts. Coccometra hagenii and probably Stylometra spinifera. 



Localities. Near Bahia Honda, Cuba, 100 fathoms; Blake Stations 32, on the 

 northern part of the Yucatan Bank, 95 fathoms; 155, off Montserrat, 88 fathoms; 

 and 269, off St. Vincent, 124 fathoms. 



MYZOSTOMUM DUBIUM VON GRAFF. 



Occurrence. Free-living. 



Hosts. Heterometra crenulata (recorded as Comatula [or Antedon'] dubia) 

 and an unidentifiable species recorded as Comatula (or Antedon) triqueta. 

 Locality. Near Bohol, Philippines. 



MYZOSTOMUM MOEBIANUM VON GRAFF. 



Occurrence. Free-living. 

 Host. Eecorded as " Comatula. sp." 



Locality. Fouquet Island, southeast of Mauritius, 18 fathoms. 

 Remarks. The species collected by Professor Mobius at Fouquet Island were 

 Oligometra occidentals, Tropiometra carinata, and Dorometra mauritiana. 



