540 . ROBERT KIDSTON ON FOSSIL PLANTS 
Eremopteris, Schimper. 
Eremopteris erosa, Morris. 
Sphenopteris erosa, Morris ; Murchison, Geo, of Russia, ii., pl. C. f. 3. 
Position and Locality.—Plentiful in the Cement-stone group of the Calciferous 
Sandstone series, Glencartholm, Eskdale. . 
Evremopteris Macconochii, sp. nov., Kidston. 
Plate XXXII. figs. 3 and 3a, 
Description.—Frond bipinnate ; pinne alternate, lanceolate ; pinnules rhom- 
boidal, distinct, margins laciniate or cut into narrow linear segments, dentate 
at their apices, the pinne attached to the rachis by their attenuated decurrent 
bases ; veins numerous. 
Remarks.—Only one specimen of this fern has been met with. It is dis- 
tinguished from Hremopteris elegans, Ett., by its regular rhomboidal and dis- 
tinctly separate pinnules. 
These characters and the regular mode of its growth, clearly define this 
species from the other members of the genus. 
I have pleasure in naming this fern after Mr. ArtHur Macconocuis, who 
was the chief collector of the Eskdale and Liddesdale fossils. 
Position and Locality.—From the Cement-stone group of the Calciferous 
Sandstone series, Glencartholm, Eskdale. 
Rhacophyllum Lactuca (Sternb.), Schimper. 
Rhacophyllum Lactuca (ster), Schimper, Paléont. végét., tab. xlvi. f. 1; xlvii. f. 2. 
Schizopteris Lactuca, Presl. in Sternb. FV. d. Vorw., it, p. 112. 
. 5 Genitz, Ste/nkohl. v. Sachs, tab. xxvi. f. 1; tab. xviii, xix. (specimina speciosissima). 
Pachyphyllum Lactuca, Lesq., Geo. of Pennsyl., vol. ii. pl. viii. f. 4, 5. 
Hyinenopyllites Clarhii, Lesq., Paléont. of Illinois, ii. pl. xxxix. 
Remarks.—Of this fossil, concerning whose true affinities so many opinions 
are held, only one specimen has been obtained. 
Position and Locality —F¥rom the Cement-stone group of the Calciferous 
Sandstone series, Docken Beck, Eskdale. 
PALAOPTERIDEA, 
Adiantites, Brongn. 
Adiantites Lindseeformis, Bunbury. 
Racopteris Machaneki, Stur., Culm-Flora, tab. viii. fig. 4. 
es paniculifera, Stur., Culm-Flora, tab. viii. fig. 3. 
Remarks.—This plant is certainly identical with Racopteris Machaneki, Stur., 
