Clarkcomanthus sp. 1

Kogo, Ichizo, Fujita, Toshihiko & Kubodera, Tsunemi, 2019, Shallow-water Comatulids (Echinodermata: Crinoidea) from Ambon and Lombok Islands, Indonesia, Species Diversity 24, pp. 229-246 : 236

Clarkcomanthus sp. 1

Material examined. 1 specimen. Ambon Is. NSMT E-8116 (1 specimen), Pombo I ., 10 m, November 28, 1992.

Description. Centrodorsal thin discoidal, pentagonal in aboral view, 3.2 mm across, 0.7 mm thick, with 16 cirrus sockets in 1 aligned row, only 3 rudimentary cirri retained. Radials trapezoidal, in contact laterally. IBr 2: Ibr 1 oblong, in contact laterally at base; Ibr 2 (axil) low pentagonal, free laterally. IIBr 4(3+4), rarely 2. IIIBr 2, rarely 4(3+4). IVBr 2. Arms 31 or 32, 30–35 mm long; first syzygy at br 3+4; middle brachials beyond br 4 with everted and spiny distal edge. PII longest, 9 mm long, of 41 segments; combs of 8 teeth nonconfluent, with pointed tip; distal 2 or 3 pinnulars with secondary tooth; first comb tooth transverse. Pinnule combs to P 3, rarely to P 4.

Remarks. This specimen closely resembles to the specimens of Clarkcomanthus mirus (NSMT E-8188 and 8247). Though the components of the division series and the distribution of pinnule combs are different: IIIBr series is usually 4(3+4) and combs are limited to P 2 in C. mirus , while IIIBr mainly of 2 and combs extend to P 4 in this specimen. From these points, this specimen is regarded as a young individual of some species of Clarkcomanthus , other than C. mirus .