A treatise on zoology . ove - shaped, with shallowdepression for viscera ; radial facetsseparated by processes ; lax rising aboveorigin of IIBr into a 3-sided spine,which perhaps helped to support thetegmen; IIBr small. Torynocrinus,Seeley (1866 ; synn. Gyrfocrinus, Jaek. ;? Hemicrinus, dOrlx), Upper Jurassic toLower Cretaceous ; patina and proximalefused, the ventral surface bent to one sideand bearing stout arms. Gammarocrinus,Quenst. (1858 ; syn. Sclerocrinus, Jaek.),Upper Jurassic ; patina massive, concavebelow. Gymnocrinus, de Lor. (1879, , 1891) ; Upper Jurassic ; lax re-markably
A treatise on zoology . ove - shaped, with shallowdepression for viscera ; radial facetsseparated by processes ; lax rising aboveorigin of IIBr into a 3-sided spine,which perhaps helped to support thetegmen; IIBr small. Torynocrinus,Seeley (1866 ; synn. Gyrfocrinus, Jaek. ;? Hemicrinus, dOrlx), Upper Jurassic toLower Cretaceous ; patina and proximalefused, the ventral surface bent to one sideand bearing stout arms. Gammarocrinus,Quenst. (1858 ; syn. Sclerocrinus, Jaek.),Upper Jurassic ; patina massive, concavebelow. Gymnocrinus, de Lor. (1879, , 1891) ; Upper Jurassic ; lax re-markably developed. Phyllocrimis, dOrb.(1849), Bajocian to Neocomian ; RR havesmall facets and long spines. Tormocrinus,Jaek. (1891), Eocene, and Trigonocrinus,Bather (1889), Oxfordian, have verysmall radial facets, rounded spines, anda deep tubular cup-cavity; the latterdiffers in the loss and atrophy of certainrays. Dolichocrinus, de Loriol (1891 ;syn. Tetanocrinus, Jaek.), Upper Jurassic ;RR form a tube 10 mm. long, 2-25 Fig. CXX. Eugeniacrinvs caryophyllatvs, partialreconstruction (x 2 diam.), and in-terior view of a priniaxil (x 3 diani.),on which are seen the articiilar facets(IIBr) for the secundibrachs ; thelatter are only partially known. Otherletters as usual. (Based on the obser-vations of Jaekel.) wide, with interradial re-entrant anglesat its base; the radial facets are ofBourgueticrine or Antedonid type, and ifBB were present, as de Loriol supposes, the genus must be removed fromthis family. Family 8. Holopodidae. Pinnata with patina of 5 RR,usually fused, and enclosing a relatively wide cavity. BB presumably as inEugeniacrinidae. 0 large, surrounded by a few iAmb. lax fused to IBr,in adult, and supports stout, incurved, unbranching rami ; no stem ;attachment by base of patina. No sacculi. The arm-structure led Jaekel(1891) to combine these forms with the Eugeniacrinidae. Genera—Holopus, dOrb. (1837), Tertiary of Italy, Recent, Caribbean Sea, shallow 198 THE CRINOI
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