45 
111. GENUS PENTACRINITES ver PENTACRINUS. 
FIVE ANGLED LILY-SHAPED ANIMAL. 
Generic Character. 
An animal with a column formed of numerous pentangular joints, articu- 
lating by surfaces with pentapetalous semistriated markings. Superior colum- 
nar joint supporting a pelvis of five joints, on which five first costals rest 
succeeded by five second costals and five scapule, from which ten arms pro- 
ceed, having each two hands, composed of several tentaculated fingers. 
Column long, having numerous auxiliary side arms. 
Base unascertained. 
i Observation. 
The generic name is derived from the five cornered shape of the column. 
One of its species has occurred in a recent state, and furnishes a clue for 
the illustration of many facts relative to the crinoidea. The genus 0ھ‎ 
of Dr. Leaca approximates the genus Penracrinus to the AsrERLE and 
CoMaATUL 正 ,of M. Lamarck. 
There are instances of the column of this genus having sometimes a 
tetragonal, or hexagonal form, these I consider as monstrous varieties. 6 
former figures exist in Townsenp’s Character of Moses, vol. r. Pr. xx. fig. 5: 
Parxinson’s Org. Rem. vol. 11. PL. XIII. fig. 59. Horer, tab. vr. 77. of the 
latter, TownsenD, vol. r. Pr. x1. fig. 2. Bruckman’s Thesaurus Subter, Due, 
Brunsw. p. t. Cap. ix. p. 66. 
A M ll e په‎ SS PUE PE ای‎ 

