[268] Pict. Atlas, pl. xlix. figs. 1, 3, 6.
[269] Upwards of 80 figures of Encrinital remains are given in Pict. Atlas, pl. xlvii.
Lign. 91. Illustrations of Crinoidea.
| Fig. | 1.— | Group of Living Comatulæ; nat. (Dr. Thompson.) |
| 1a.— | A single Comatula of the same group, magnified. | |
| 2.— | Pentremites pyriformis. Silurian, Ohio. | |
| 3, 4.— | Surfaces of two pentapetalous ossicula. | |
| 5.— | A single Ossicle of an Apiocrinus. Chalk. | |
| 6.— | Encrinus liliiformis; the receptacle with part of the column attached; 1/2 nat. From Brunswick. | |
| 7.— | Pentacrinital stem with four angles. | |
| 8.— | Entrochite, composed of five smooth ossicles. | |
| 9.— | Quadrangular stem of seven ossicles. | |
| 10.— | Cyathocrinus tuberculatus. (Sil. Syst.) | |
| 11.— | Receptacle of Bourqueticrinus; from the Chalk. Lewes. |
The receptacle which contained the viscera is extremely diversified in form, and in the number, shape, and arrangement of its plates: the annexed figure 2, [Lign. 92], illustrates the several pieces that enter into its composition. The genera, or sub-genera, are based on the modifications of shape and structure of the receptacle; and their names are composed of the termination crinus, or crinites (signifying stone-lily), with a term prefixed expressive of the generic character: thus we have Apiocrinus, or Apiocrinites, Pear Encrinite.[270]
[270] The termination crinus is now generally employed, instead of crinites; the latter is preferable, as it indicates the fossil nature of the specimens. A more expressive name than Encrinite was suggested by Mr. Martin, of Derbyshire; that of Stylastritæ or Column-Stars.