KIDSTON : YORKSHIRE CARBONIFEROUS FLORA. 103 
| ' Diplothmema furcatum Zeiller, Foss. flora d. bassin houil. d. 
Valen., p, 147, pl. iv., figs. 5—6, pl. v.;.fig-.4. 
| Sphenopteris sp. Lebour, Illustr. of Fossil Plants, pl. xh. 
MIDDLE CoAL MEASURES. mie 
Hor. — Barnsley Thick Coal.  Locs.—East Gawber Colliery, 
near Barnsley ; South Kirby Colliery, near Pontefract. 
Sphenopteris spiniformis Kidston, n. sp. 
Sphenopteris spinosa Kidston (not Gópp.), Ante, pp. 29, 70. 
Sphenopteris artemisiefolia Sauveur (in part, not Sternb.), 
Végét. foss. d. terr. houil. de la Belgique, pl. xx., figs. 
I—2, 1848. 
REMARKS.—An examination of a larger number of 
specimens of the fern I originally placed under Sphen. 
spinosa Gópp., has shewn me that the identification of 
the fossils as such is an error. ‘The Yorkshire fern is 
similar to that figured by Sauveur, on his pl. xx, figs. 1—2 
(not fig. 3) as Sphenopteris artemisiefolia, from which 
| species, however, his plant is essentially distinct. Zeiller 
unites these two figures of Sauveurs Sphenopteris arte- 
misiefolia, along with the Sphenopteris stricta Sauveur (not 
| Sternb.) under Crépin’s Sphenopteris artemisiefolioides, 
| (Zeiller, Flore foss. d. bassin houil. d. Valen., p. 132). I 
have not been able to consult the original work in which 
| Crépin first proposed the name of Sphenopterts artemisic- 
folioides and therefore do not know what synonymy he gave 
for his species in Mourion, Géol. de la Belgique, vol. ii., 
p. 60, as quoted by Zeiller. 
À I have a specimen of ‚Sphenopteris artemisiefolioides 
| which I received from Mons. Crépin a few years ago, and 
do not think it possible to unite with it Sauveur's figures 
1—2 of Sphenopteris artemisiefolia, though I have no doubt 
| Sphenopteris stricta Sauveur (not Sternb.) is the same as 
| Crépin's Sphenopteris artemisiæfolioides. 1 have, therefore, 
proposed the name of spiniformis for the plant figured by 
