Ophiomusium granosum Lyman, 1878

Baker, Alan N., 2016, An illustrated catalogue of type specimens of the bathyal brittlestar genera Ophiomusium Lyman and Ophiosphalma H. L. Clark (Echinodermata: Ophiuroidea), Zootaxa 4097 (1), pp. 1-40 : 10

Ophiomusium granosum Lyman, 1878 .

Figures 13 a, b

Ophiomusium granosum Lyman, 1878 ; Litvinova, 1981.

Syntypes (2) BMNH 82.12.23.418. Challenger Station 237, SE Sagami Bay, Japan. 3429 m. Syntype MCZ 451 Off Japan 1875 m.

Main Features: MCZ 451: 7 mm d.d. Disc coarsely granular, spikey at interradial margin. 5–7 sharp arm spines, midline of arms sunken dorsally and ventrally. Two pairs of exposed tentacle pores, no scale. Narrow ventral arm plates with some small tubercles. Naked oral shields, a tubercle covered plate between the oral shield and the larger interradial plate, which also has pointed tubercles. Genital slit small and alongside the proximal part of the first lateral arm plate. Dorsal arm plates also with tubercles.