An illustrated catalogue of type specimens of the bathyal brittlestar genera Ophiomusium Lyman and Ophiosphalma H. L. Clark (Echinodermata: Ophiuroidea) Author Baker, Alan N. text Zootaxa 2016 4097 1 1 40 journal article 10.11646/zootaxa.4097.1.1 1bdc9f90-79e0-4265-b8b7-9057618b36db 1175-5326 270988 CD767562-3A19-4F4C-914D-80C50AD0D250 Ophiomusium microporum H. L. Clark, 1941 . Figures 22 a, b, c Holotype MCZ 6236, Atlantis station 3384, Old Bahama Channel, Cuba , 530m Main Features : Disc tumid with a few large scales. Radial shields are wide and separated only proximally. They slope up markedly towards the disc centre. Large marginal interradial plate, notched along edge. Oral shield and interradial plate dominate ventral interradius. Genital slits extend to the end of the first ventral arm plate. Two pairs of exposed tentacle pores, one scale. Six ventral arm plates, the first two of which are large. Four long arm spines basally, upper 2 separated from lower 2. Underside of arm flat. Arms finely tuberculate.