119 



de dessous, & forment en traversans le bord, Sc en tirant vers le centre, 

 une quantite des plis irreguliers. Au milieu de sa base ce fongite a 

 une grande & pro ion de excavation *." 



The specimen, represented Plate XI. Fig. 1, formed a part of Mr. 

 Strangers collection, and was obtained from Switzerland ; it bears a 

 a very close resemblance to a fossil of Bourguet's, described as Le 

 Cariophylloide a grandes Raiesf. Like the preceding fossil, its sub- 

 stance is divided into thick plicae, rarely ramifying, which are con- 

 nected together by very slender transverse filaments, very thinly dis- 

 posed. As in the former fossil, so also in this, a large cavity appears 

 to have existed in its superior part, but which is now filled by the mat- 

 ter of its matrix, which, as well as the substance of the fossil itself, 

 appears to be chiefly calcareous. Possessing only one specimen of 

 this fossil, I was loth to add. it to the numbers, which I had devoted 

 to the examination of their internal structure. By an examination, 

 however, with a lens, I was enabled to discover, that a spongy texture 

 existed in the substance of the plicae. . 



Another specimen, of a similar substance and from the same place 

 as the preceding fossil, and, certainly, though not obviously, of the 

 same species, is depicted, Plate XL Fig. 3. In this specimen, the 

 lamellae are much smaller, they ramify more frequently, and are 

 connected by much more numerous transverse processes, which, as in 

 the preceding fossil, cross the perpendicular lamellae, nearly at right 

 angles, and thereby frequently form square or rhomboidal interstices. 

 The spongy texture is very distinctly seen, by the aid of a lens, in the 

 lamellae of this fossil also. 



Another elegant variety of this species of fossil alcyonium is shewn, 

 Plate XL Fig. 9. This fossil possesses somewhat of the form of an in- 

 verted slender cone, the paint of which answers to the pedicle, and the 

 base to the central opening. The surface shews very distinctly, in 11111113? 



* Monumens des Catastrophes,. &c. Tome II. Paite II, p. 50. 

 t Tcaite des Petrifications, Planche II. Fig. 16. 



