884 J. E. Teschemacher on Fossil Vegetation. 
Brongniart’s N. Dufresnoyii, which is certainly an Odon- 
topteris. 
NzvnoPrEnis gigantea, Sternb., Brongn. 
From Pictou, Nova Scotia. If the distance between the 
pinnules is a sufficient distinction, this specimen is clearly 
N. gigantea, and not N. flexuosa. The pinnules in this are 
i to $ inch long; in Brongniart, and Lindley and Hutton, 
vol. I. tab. LII., they are from į to 1 inch long. 
SPHENOPTERIDES, Unger, Syn. Plant. Foss. 
My fragments of this group, all from Mansfield, Massa- 
sities are so small that I scarcely dare venture on descrip- 
tion; yet the very existence of these fragments proves the 
existence of the species. With great doubt, therefore, I refer, 
fig. b, plate XXXV., to 
S. Dubuissonis, Unger and Brongn. 
Cheilanthites, Gópp. 
- Nor do I see any better appropriation of fig. e, on the same 
; although the dots on the specimen bear the regularity 
of loactifieation: Both are from Mansfield. . 
Fig. g, on the same plate, also from Mansfield, I refer, 
doubtingly, to 
S. Gravenhorstii, Brongn. tab. LV. fig. 3. 
Cheilanthites, Gópp. 
HYDROPTERIDES. Unger, Syn. Pl. Foss. 
MARSILEACEX, Id. | 
Sphenophyllum emarginatum, Brong. Prod., from Mansfield. 
^ truncatum, — * A ff 
: dentatum, sie is aes Tov n 
Nova Scotia- 
and ^ 
* erosum, c «c x: 
