Ophiosphalma cancellatum (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 : 27

Ophiosphalma cancellatum (Lyman, 1878) .

Figures 45 a, b

Ophiomusium cancellatum Lyman, 1878

Ophiomusium cancellatum Lyman, 1878 ; H. L. Clark, 1939. Ophiosphalma cancellatum (Lyman 1878) ; Guille & Vadon, 1986.

Holotype BMNH 82-12-23 -204, Challenger station 236, South of Sagami Bay. Japan, 1417 m .. Additional material: John Murray Expedition, 4 specimens, 1207–1463 m, Zanzibar area; 1 specimen, Challenger station 33 off Bermuda, 796 m.

Main Features: Disc granular with small rounded scales. Upper and lower arm plates present throughout most of the arm length. Genital slits longer than the first arm segment, and bordered by low, longer than high papillae. Three pairs of exposed tentacle pores.

Figures

FIGURE 45. Ophiosphalma cancellatum BMNH 82 - 12 - 23 - 204: a, b, dorsal and ventral disc sectors. FIGURE 46. Ophiosphalma corticosum BMNH 82 - 12 - 23 - 423: a, b, dorsal and ventral disc sectors; c, basal arm segments.