[MATTHEW] FLORA OF THE LITTLE RIVER GROUP NO. III 13 
S.—Harttii, Dn. 
S.—splendens, Dn. 
S.—(Callipteris) pilosa, Dn. (The venation is obscure in this 
species. ) 
Most writers refer to Sphenopteris a group of forms with narrow 
dissected pinnules, few nerves and alated margins which Sir William 
has separated as Hymenophyllites. It may be noted that the mode 
of forking in Psilophyton (?) glabrum, Dn., is somewhat like that of this 
group of Sphenopterids. 
Sphenopteris (Hymenophyllites) curtilobus, Dn. 
S.—(H.—) subfurcatus, Dn. 
S.—(H.—) Gersdorffii, Goepp. Dn. 
S.—(H.—) obtusilobus, Goepp, Dn., (larger than the preceding, 
but like it). 
S.—(H.—) Hildreti, Lesq. Dn., (Found at Lepreau by T. C. Weston) 
Group NEUROPTERIS.' 
The next group of forms we have to deal with are those which have 
the Neuropteroid nervation, typified by Neuropteris polymorpha, Dn. 
This species is the Silurian equivalent of Neuropteris heterophylla of the 
Carboniferous Time, which has been found to be a Pteridosperm. 
Neuropteris polymorpha, Dn. 
N.—Selwyni, Dn. (A single specimen among the types in the 
Natural History Society Collection; another noted by Mr. David White, 
on a slab in the Redpath Museum, having on it also the type of Whit- 
tleseya Dawsoniana, D. White). 
N.—crassa, Dn. (A single pinnule collected by Wm. Lunn, fide 
Dawson). 
N.—retorquata, Dn. (Common at Lepreau, rare at St. John). 
Cardiopteris Eriana, Dn. (The fossil referred to this genus by Sir 
William is very like certain lateral pinnz near the base of the rachis in 
Neuropteris polymorpha, Dn. 
Whittleseya Dawsoniana, D. White. 
W.—concinna and varieties, lata and arcta. 
Allied to the Neuropterids are certain forms placed by Dawson 
under other genera; some have the venation of Aphebia, and may be 
basal or rachial pinne of species of Neuropteris, others are of the allied 
genus Odontopteris. 
Cyclopteris (Nephropteris) problematica, Dn. 

1 Proc. Roy. Soc. t. LX XII, p. 487 (1903)—Phil. Trans. Roy. Soc. Vol. 197 
B. p. 1 (1904). 
