194 Berry . — A Lower Cretaceous Species of 
that term in a somewhat general sense, and since the term Baievopsis is not 
available as well as grossly inappropriate, a new generic name is demanded, 
and Schizaeopsis is here proposed. The single known species with its 
synonymy becomes as follows : — 
Schizaeopsis expans a (Font.). 
Baieropsis expansa y Fontaine, Potomac Flora, 1890, p. 207, PI. LXXXIX, 
Figs. 1, 3 ; PL XC, Fig. 1 ; PL XCI, Fig. 2 ; PL XCII, Fig. 5. 
Baieropsis macrophylla , Fontaine, ibid., p. 212, PL XC, Fig. 6. 
Fronds relatively large, about 11 cm. in length by 6 cm. in width, 
apparently short stalked, divided almost to the base into two principal 
ribbon-like divisions, which in turn are almost immediately subdivided 
dichotomously into two similar subordinate divisions, which are dicho- 
tomously forked in a like manner at varying heights. In the nearly 
complete specimen figured, from which the restoration has been made, the 
outer main division of the frond is somewhat less developed and less cut up 
than the inner main division. The texture is coriaceous. The veins are 
thin but strong, in some specimens suggesting a double vascular strand ; 
they fork dichotomously near the region where the frond forks, and then 
repeatedly at varying intervals, but they are for the greater part of their 
course unbranched and approximately parallel. They are somewhat more 
numerous than in the comparable modern species of Schizaea. The fructi- 
fications as preserved are brownish spindle-shaped bodies about 4 mm. in 
length and 1 mm. in diameter. They were observed and figured by 
Fontaine in the specimens named by him Baieropsis macrophylla , and 
were considered to be of a pathological nature, i.e. fungal, but were not 
noticed on the specimens which he described as Baieropsis expansa , although 
they are readily seen in the figure here reproduced, which is from a photo- 
graph of the specimen from which Fontaine drew his Fig. 1 on PL LXXXIX 
of the Potomac Flora. These fructifications are borne at the distal ends 
of certain of the veins at varying heights, usually along the margins, but 
occasionally on the face of the laminae. Ordinarily they are massed 
towards the distal ends of the ultimate divisions of the frond, as in the 
modern Schizaea elegans , the ultimate ones appearing as continuations of 
the ultimate teeth which terminate the distal lacinae. Numbers of these 
fructifications are in organic connexion with the fronds, so that there is no 
room for any mistake in observation. These objects are found upon micro- 
scopic examination to be made up of masses of closely packed, relatively 
large spores, in the ground mass of which there are traces of other tissues 
which cannot be made out, but which evidently represent peduncles and 
synangial walls. These spores are nearly spherical in form, a feature 
common to the genera Aneimia and Lygodmm , but apparently not to 
