ONYCHIOPSIS. 59 
Although not included under the present species, 0. elongata, 
there is a plant which must be bricfly alluded to as an example of 
the same genus, and probably very closely allied to Geyler’s species. 
In 1888 Velenovsky contributed an important communication, 
apparently overlooked by some recent writers, on ‘‘ Die Farne 
der bohmischen Kreideformation’’; he includes in his list of 
Cenomanian ferns from the Perucer beds a new species, Vhyrso- 
pteris capsulifera,’ and compares it to Z. Maakiana, Heer, and 
especially to O. elongata (Geyler). Several figures are given 
both of sterile and fertile pinne, and the figure of the fertile 
axis, pl. i. fig. 10, represents what is obviously the same type 
of fertile pinna as Geyler’s pl. xxxi. fig. 5 and Pl. III. Figs. 2-4 
of this Catalogue. Possibly the differences which are shown in 
the figures by Velenovsky, Geyler, and Yokoyama, between 
T. capsulifera and T. elongata, are hardly of sufficient importance 
to render a second specific name necessary; the chief divergence 
being the greater breadth of the ultimate segments in most of 
the Bohemian specimens. 
Nathorst,” in calling attention to this paper by Velenovsky, 
notes the fact that the species 7. capsulifera possesses fructification 
exactly like that of O. elongata, and must, therefore, be included 
in the same genus. 
In looking through the English Wealden material it has often 
been difficult to decide the limits to assign to the two species 
O. Mantelli and O. elongata; the coarser forms of the former come 
very near to the latter species. 
So far, however, I have included only one specimen in this 
species. It is not impossible that we may eventually have to 
include even those forms with larger and broader pinnules in the 
species O. Mantelli; for the present, at least, there seem to be 
good reasons for referring such specimens as the one figured, 
Pl. II. Fig 2, to Geyler’s species. 
We gsilee P). Tl: Fig. -2: 
In this Figure are represented the best of several fragments 
which occur on the same piece of rock. On the same specimen 
are some badly preserved fragments of Cladophlebis Dunkeri 
(Schimp.). 
1 Abk. k. bohm. Ges. Wiss. vol. ii. 1888, p. 10. 
* Denkschr. k. Ak. Wiss. math.-nat. Cl. vol. lvii. p. 55. 
