have successively occupied the surface of the Earth. 351 



of its precise geological epoch and the totality of vegetable spe- 

 cies it comprehends. The most abundant and most characteristic 

 of these species is the Rhodomelites strictus, the branches of which, 

 interlaced and mixed with Zosterites, constitute the mass of these 

 lignites, with the wood of Coniferse, which have not yet been stu- 

 died, and the little, very rare, branches of Brachyphyllum Orbi- 

 gnianum. 



I have inserted in this epoch the two species of Cystoseirites 

 described by M. de Sternberg, and indicated by him as found 

 in beds between the Jurassic schists and the chalk in Transyl- 

 vania. Does this fossil flora correspond to a formation almost 

 entirely marine, but contemporaneous with the Wealden epoch ? 

 This can only be decided by new investigations, but the analogy 

 of the Brachyphylla of the two epochs leads to such a supposition. 



2. Cretaceous Epoch, 



Amphigenous Cryptogams. 



Confervites fasciculatajB**- — Bornh., 

 England. 



aegragropiloides, Br. — Bornh. 



Woodwardii, Mant. — England, 



Norfolk. 



Sargassites Lyngbyanus, Br. — 

 Borah. 



Haly serites Reichii, Sternb. — Nieder- 

 schona. 



Chondrites furcellatus, Biim. — Sax- 

 ony, Beauvais. 



Mantelli, Rom. — Saxony. 



Targionii, Brong. — Beauvais. 



cylindricus, Sternb. — Tesehen ; 



Bohemia. 



Doubtful AlgcB. 



Fucoides Brongniartii, Mant. — Sus- 

 sex. 

 Cylindrites, of Gbppert, 3 species. 



Acrogeuous Cryptogams. 



Ferns. 



Protopteris Singeri, Presl. — Silesia. 



Buvignieri, Br. — Grandpre. 



Pecopteris Reichiana, Br. — Nieder- 



schona. 



striata, Sternb. — Sahla. 



bohemica. Cor da. — Bohemia. 



Zippei, Cor da. — Bohemia. 



lobifolia, Corc?a.— Bohemia. 



And two new s})ecies from Nieder- 



schona. 



MonocotyledonSk 



Palms. 



Flabellaria chamaeropifolia, Gopp. — 



Silesia. 

 Palmaeites varians, Corda. — Boh. 



Gymjiospermous Dicotyledons. 

 Cycade^. 



Cyeadites Nilssonianus, Br. — Sca- 

 nia. 



Zamites cretacea, Br. — N. Schona. 

 (Pteroph. cretaceum, Rossm.) 



Microzamia gibba, Corda. — Boh. 



Zamiostrobus ovatus, Gopp. — En- 

 gland. 



familiaris (male cone). — Bo- 

 hemia. 

 (Zamites familiaris, Corda.) 



Guerangeri (male cone). — Le 



Mans. 



CoNIFERiB. 



* Cupressineae. 



Widdringtonites fastigiatus, Endl. — 



Bohemia. 

 Cryptomeria primaeva, Corc?a. — Boh. 



** Abietineae. 



Abietites Benstedi. — Gopp. 



oblongus, Lindl. — Lyme- Regis, 



Grandpre. 



exogyrus, Corda. — Bohemia. 



Pinites Reussii, Corda. — Bohemia. 



