. The Crinoidea flexibilia (with an atlas of and 76 plates). Crinoidea, Fossil. Fig. 38. Clidochirus Ichthyocrinidae with rays in contact except in lower part at the posterior side. Crown elongate, expanding above radials. Radianal in primitive position under right posterior radial, resting on basals and touching right anterior radial. Inf rabasals variable; either large, exposed above the column, or small, entirely concealed. Basals large, exposed above the column. Anal x alone, or followed by others in single vertical series, arched over by brachials. Primi- brachs two. Arms dichotomo
. The Crinoidea flexibilia (with an atlas of and 76 plates). Crinoidea, Fossil. Fig. 38. Clidochirus Ichthyocrinidae with rays in contact except in lower part at the posterior side. Crown elongate, expanding above radials. Radianal in primitive position under right posterior radial, resting on basals and touching right anterior radial. Inf rabasals variable; either large, exposed above the column, or small, entirely concealed. Basals large, exposed above the column. Anal x alone, or followed by others in single vertical series, arched over by brachials. Primi- brachs two. Arms dichotomous, interlocking. Column large, with or without proximal enlargement. Otherwise similar to Ichthyocrinus. Genotype. Clidochirus pyrum Angelin. Distribution. Silurian to Devonian (Lower Carboniferous?) ; Sweden and the United States. This genus was founded by Angelin 1 upon a single species and specimen from bed c at Wisby, Gotland. His generic diagnosis, translated, is as follows: Body short, pyriform. Calyx cyathoid, inequilateral. Radials variable, three or four. Anals dis- tinct, four, in a longitudinal series. This would have been well enough as far as it goes if given in connection with a correct definition of Ichthyocrinus, although it does not agree with his specific description, nor with the facts in regard to the number of anal plates in the series. But Angelin' placed it under a new family, Homalocrinidae, along with Lecanocrinus and Calpiocrinus, without recogniz- ing its close relation to Ichthyocrinus, although he figured under /. piriformis {op. cit., pi. 22, fig. 6) an excellent specimen of his type species Clidochirus pyrum (see my PI. XXXVII, figs. 30, b). His account of the genus contained nothing as to the composition of the base, 1 Iconocraphica Crinoideorum Sueciae, 1878, p. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may no
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