Figs. 6, & 8. Fragments of stems of a Pentacrinite (Pentacrinus scalaris, of Goldfuss); from Gloucestershire.
Fig. 9. A Pentacrinite expanded on a slab of Lias-shale. Gloucestershire.
Fig. 10. Stem, receptacle, and arms of a Crinoidean (probably a Cyathocrinite); it is drawn in an inverted position. The figure is stated by Mr. Parkinson to be copied "from a plate by Dr. Capeller." Neither the locality, nor the stratum from which it was obtained, is mentioned.
Fig. 11. Part of the stem of a Pentacrinite (P. basaltiformis, of Miller); from the Lias. Gloucestershire.
Fig. 12. The receptacle of a Crinoidean (Platycrinus lævis, of Miller); from the mountain limestone, Ireland. Fig. 13, ossicles of the arms; and fig. 14, joints of the stems, slightly magnified.
Fig. 15. "The superior part of the Briaræan pentacrinite."—Mr. Parkinson. (Pentacrinus Briareus, of Miller.) The specimen is a slab of Lias, almost wholly made up of crinoideal remains. In relief on the surface are the stems and dislocated ossicles of the receptacle; the latter are thus enumerated by Mr. Parkinson;—a, scapula; b, clavicle; c, first bone of the arm; d, second arm-bone; e, commencement of the two series of bones forming the fingers.
Fig. 16, is another slab of pentacrinal Lias limestone, with portions of a stem and numerous side-arms: these are generally electrotyped, as it were, with a brilliant pyrites, giving a rich metallic lustre to the animal remains. In the British Museum there are many splendid specimens of this highly interesting family of Radiaria. I would especially direct the intelligent visitor's attention to a slab of stone, many feet in height and breadth, on which a group of Pentacrinites is displayed, as palpable and perfect as if the animals were sporting in their native element. This matchless specimen is from Germany.
Fig. 17. One of the small auxiliary lateral tentacles of a Pentacrinite.