262 



lobsters. Lastly, some of these wyers are knotted, and others of them 

 fairly subdivided or branched */' 



Besides the several species of these animals, which have been 

 spoken of in the foregoing pages, some others have also been described 

 which differ sufficiently from these to allow of their being considered 

 as different species. 



Mons. Davila has given a plate, representing a dark schist from 

 the Duchy of Wirtemberg, on which appears a group of articu- 

 lated tentacula, adhering to a calyx-formed basis f. This, in Mr. 

 Walch's opinion, is one of the terminations of a pentacrinite, disco- 

 vered by Gmelin^. This, however, does not differ in the least from 

 the remains of these animals, which are constantly observed in the 

 slabs from Dorsetshire. In the same work a specimen is represented, 

 which is a piece of the yellow fissile stone from Pappenheim, bearing 

 on its surface the remains of some animal, in many respects analagous 

 with the pentacrinites. Ten arms, rather thinly beset with jointed 

 tentacula, are discoverable ; but no traces are seen of the trunk of the 

 animal, nor do the parts, which are here preserved, bear a resemblance 

 to any species of this animal which has been hitherto noticed. This 

 specimen belonged to Professor d'Annone . A specimen of part of 

 a vertebral column, formed of four sides, has been represented, Plate 

 XIII. Fig. 59? similar to what has also been remarked by Rosinus. 

 Mons. Schultz describes one of these animals as having a quadrangu- 

 lar base and eight rays ||. Mons. Guettard also describes one of these 

 animals, the primary rays of which are four, and dividing repeatedly 

 dichotomous, terminate in numerous small branches ^f . 



* Philosophical Transactions, Vol. IX. p. 276. 



t Catalogue Systematique & Raisonne, Tome III. Tab. I. 



t Monumens des Catastrophes, Tome I. Tab. XI. 6'. 



Monumens des Catastrophes, &c. Tome II. Parte 2de. p. 93. Tab. LI, 



H Betrachtung der verschinten See-sterne, i 9. p. 22. 



^ Memoires de V Academic Royales des Sciences, 1156. 



