Fig. 4. Hirsutocrinus duplex n in Hirsutocrinus duplex, a New Genus and Species of Sea Lilies (Crinoidea, Comatulida, Bathycrinidae) from the Western North Pacific

Fig. 4. Hirsutocrinus duplex n. gen. and sp., holotype. A, Distal facet of hyposynostosial IIBr7 (ligamentary synarthry); B, IIBr4, aboral external view; C, detail of B showing numerous needle-like spines; D, synarthrial facet of columnal 38 (mesistele); E, synarthrial facet of columnal 59 (dististele); F, detail of E showing fulclar ridge axis of columnal 59.