Revision of the pentacrinid stalked crinoids of the genus Endoxocrinus (Echinodermata, Crinoidea), with a study of environmental control of characters and its consequences for taxonomy Author David, Jerome Author Roux, Michel Author Messing, Charles G. Author Ameziane, Nadia text Zootaxa 2006 1156 1 50 journal article 50584 10.5281/zenodo.172265 20ced0ab-42ec-4de6-bab0-b3da6529bae9 1175­5326 172265 Endoxocrinus ( Endoxocrinus ) parrae carolinae ( A.H. Clark, 1934 ) Figures 4 e–f, 5a. Synonymy: Diplocrinus carolinae A.H. Clark, 1934 : 4 ; Diplocrinus maclearanus Meyer et al., 1978 (pars): 426; Endoxocrinus ( Endoxocrinus ) mülleri var. carolinae David, 1998: 203 (unpublished data); Endoxocrinus ( Endoxocrinus ) carolinae Roux et al., 2002 : 820 . Emended diagnosis A short­stalked subspecies of E. parrae with up to 40 (mode 30) smooth arms (rarely rough) up to 168 mm long (mean 123 mm ); number of IIIBr up to 4 (mode 3); stalk length up to 16.2 cm (mean 10.2 cm ); proximalmost stalk diameter up to 5.6 mm (mean 5 mm ); proximal cirri remaining rudimentary behind the 5th nodal; columnal thickness and width irregular; number of internodals per noditaxis up to 12 (mode 8); ratio of height to diameter of nodals 0.41–0.44; cryptosymplexies with a slight inner symmorphy of interpetaloid zones; number of cirrals per cirrus up to 44 (mode 34). Type locality Off Puerto Rico at a depth of 504– 612 m . Holotype : Catalogue no. USNM E3124, National Museum of Natural History, Smithsonian Institution, Washington D.C.; first figured by A.H. Clark, 1934 , Pl. 1, Fig. 3 and Pl. 2 Fig. 5 .