144 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [Apr. 6, 



leaflets less pointed. This fem is characteristic of the coal-fields of 

 central France (St. Etienne and Terrasson), and likewise of the Alpine 

 anthracite : not found in England. 



3. Odontopteris obtusa. 



The variations of form observable in the different Portuguese 

 specimens of this plant, as in those from the anthracite of Savoy, 

 strengthen my behef that the O. Brardiiand 0. obtusa of Brongniart 

 are only the extreme forms of one variable species. Prof. Heer con- 

 curs in this opinion. See Quart. Journ. Geol. Soc. vol. vii. Part 2. 

 (Transl.) p. 99. 



4. Pecopteris Cyathea. 



A very general and characteristic plant of the coal-measures, but 

 found likewise in the anthracites of Savoy. 



5. P. Cyathea var. ? 



Remarkable for the combination of long and narrow leaflets with 

 simple side veins. Agrees with Brongniart' s fig. 4. pi. 101, in the 

 form of the leaflets, but not in the veins. Some might perhaps con- 

 sider it a distinct species, but I think there are scarcely sufficient 

 grounds for this. 



6. P. ARBORESCENS. 



A well-characterized specimen. The species occurs in the coal 

 formation near Bath, in several places in France, Germany, and in 

 Maryland, U.S., also in the anthracite of Savoy. 



7. Pecopteris arguta. 



Foimd in the coal formation at St. Etienne and Ronchamp in 

 France, and in Rhode Island, U.S., according to Brongniart ; not in 

 England. The Portuguese specimens have larger leaflets than those 

 figured by Brongniart. 



8. Pecopteris . 



Comes nearest to P. gigantea. Ad. Br., and very likely belongs 

 to that species, but the specimens are not sufficient for positive 

 determination. 



9. P. LONGIFOLIA, Ad. Br. Biplazites longifoUus, Goepp. 



Found in the coal formation at Saarbriick, at Wettin in Saxony, 

 and in Nova Scotia ; not in England, as far as I know. 



10. Pecopteris oreopteridis? 



Seems to agree pretty well with figs. 2 and 3 of Brongniart's pi. 105, 

 His plant occurs in the coal formation in England (Shropshire, ac- 

 cording to Morris), France, Saxony, Silesia, and Bohemia. 



11. Pecopteris leptophylla, nov. sp. Plate VII. fig. 11. 



From Val de Candozo. This is certainly a very distinct species 

 from any that I can find described, though unfortunately the speci- 



