680 BULLETIN 82, UNITED STATES NATIONAL MUSEUM. 



POLTTREMA MINIACEUM (LINN.KUS ) . 



P. H. Carpenter has recorded this species as common on the stems and cirri 

 of the pentacrinites dredged by tlie Challenger near the Kei Islands in 140 fathoms 

 and off the Meangis Islands in 500 fathoms. 



It was similarly abundant on the pentacrinites dredged by the Albatross 

 in the Philippines, usually in the variety alha Carter, and is also found on the 

 pentacrinites in the Caribbean Sea. 



It is unusual to find this form on the cirri of the comatulids, though it occurs 

 sporadically (pi. 53, fig. 1346). 



The crinoids in association with which parasitic or commensal organisms have 

 been recorded are the following : 



COMATELLA NIGRA. 



Myzostomum hrochiatum. 



COMATELLA STELLIGER.\. 



?M yzostomum- ecMnns. Myzostomum plicatum. 



NEOCOMATELLA PULCHELliA. 



Myzostomwm ahmidans. Myzostomuvi carmatuvi. 



Myzostomum, infiator. 



CAPILLASTER SENTOSA. 



Ofhiom.aza cacaotica. Ophiomuza ohscura. 



CAPILLASTER MULTIRADIATA. 



Sabivella caTpUlantericola. Myzostomum, lohatum,. 



NEMASTER lOWENSIS. 



Myzostomum marf/inaTic7?i. 



NEMASTER RUBIOINOSA. 



Myzostomuin testudo. 



NEMASl'ER niSCOinEA. 



Myzostomum viarginatum. 



COMATULA ROTALARIA. 



Anilocra. sp. fMyzostomuvi horologium. 



COMATULA SOLARIS. 



Anilocra, sp. Myzostomum pcdltdicm. 



OphJophthirms acfhwrneti-cc. ?Myzostoinym dentatum. 



fMyzostomum Kolorogium.. fMyzostotnum wttbhigimm,. 



Myzostomum costatum. Myzostom,%im carina.fum. 



COMATUL.A PURPUREA. 



SynalphcK-s hntcei. Ophlomaza cacaotica. 



