51 



A flint stone, found on the shore at DawHsh in Devon- 

 shire, bears decided marks of having derived its form from 

 the siHceous impregnation of sp. mammillaris. 



Several fossils of the tribe of Zoophytes having been 

 noticed in a former work, which, although not possessing 

 the decided characters of the genus, were still, with ex- 

 pressed doubt, placed among the Alcyonia; an attempt 

 at a better classification of some of these bodies is here 

 attempted. 



The first of these, are those bodies which are distinguish- 

 able by bundles of tubuli passing through a spongeous sub- 

 stance, and which may be thus characterised. 



Siphonia, — A fossil animal, with a polymorphous body, 

 supported by a stem proceeding from a fusiform or ramose 

 root-like pedicle ; the original substance spongeous, and 

 pierced by a bundle of tubes derived from the pedicle, 

 passing through the stem, then ramifying and terminating 

 on the surface of the body. 



The various spongeoid fossils, bearing the forms of cups, 

 funnels, fruits, &c. described by M. Guettard, as obtained 

 from Verest, near Tours and Saumur, and at Montrichard, 

 in Touraine, and by the Rev. J. Townsend, as found in the 

 green sand of the Vale of Pewsey*, as well as those which 

 are figured, PL ix. fig. 1, 4, 5, 7, 11, 12, 13; PL x. fig. 6 

 and 13, of the second volume of Organic Remains, &c. are 

 of the same genus. 



Since the publication of the last mentioned work, Mr. 

 Webster made the discovery of those interesting fossils in 

 the Isle of Wight, which from their long seeming stalks, 

 and from their tulip-formed superior terminations, obtained 



* The Character of Moses, &c. PL 1, fig. 1. PL 2, fig. 1, 2, 3. 

 PL 3, fig. 1, 2, 3. 



