FOSSIL FUCOIDS. 1¢l 
articulated. Seven species are described by authors, but the 
vegetable nature of some of these is doubtful. A beautiful 
species in Chalk, first noticed by the late Samuel Woodward, 
Esq. (author of the Geology of Norfolk), is here figured. 
Lien. 8. CoNFERVITES WooDWARDII; nat. 
Chalk. Norfolk. 
Fosstz Fucoms.—Of the tribe of Algze which comprises 
the sea-weeds that are not articulated, many fossil species 
occur in very ancient, as well as in modern, fossilife- 
rous deposits. In the Lower Silurian rocks of North 
America, béds of limestone of great extent are full of a large 
digitated Fucus (Fucoides Alleghaniensis).* The Fire- 
stone or Malm-rock of Bignor in Sussex abounds in a ramose 
variety (Fucoides Targionti, Veg. Foss. p. 56), of which 
specimens are figured in the vignette of this volume, and in 
Lign. 9. 
Cuonprites.—These fossil algze approach nearest to the 
living species of Chondrus (hence the name of the genus). 
The frond is thick, branched, dichotomous, with cylin- 
* Figured and described in Dr. Harlan’s Medical and Physical 
Researches : Philadelphia, 1835, p. 393. 
