576 HEPATICZ NOVE ZELANDLE, &c. 
bent and contain a double helix. The calyptra at length is 
left surrounding the base of the receptacle within the calyx, 
it is subrotund, whitish and carnose. 
The parts described shew the necessity of new modelling 
the characters of the genus Monoclea: it is very possible 
that from its extreme tenuity the columella escaped notice 
in the M. Forsteri, Hook. the original species on which the 
genus was founded. It is seen in M. crispata, Hook. 
ANTHOCEROS, Linn. 
51. A. punctatus, L. 
Has. New Zealand. 
Perura, Raddi. 
52. P. carnosa; n. sp.; fronde implexa prostrata atro-viridi 
vage lobata lobis elongate rotundatis vage crenatis planius- 
culis. 
Has. New Zealand. 
Fronds nearly three inches long, from a narrow base 
linear-oblong, lobed, the segments of various lengths, their 
margin scariose, irregularly crenate; the central parts of the 
frond are thick, shining when moist, of a dark olive-green. 
No fructification was present. 
As it would be very difficult to distinguish the European 
Jung. calycina, Tayl. from J. epiphylla, L. in a barren state ; 
so the determination of the present plant as a new species 
is unsatisfactory without the aid of characters drawn from 
the fruit. Still the darker green fronds, with lobes less 
rounded and above all their crenate margins, would seem to 
justify a separation. : | 
HxenoriLA, Tayl. in Linn. Trans. 
52. H. dilatata, n. sp.; fronde oblonga tenuissima latissima 
lobata lobis rotundatis integerrimis. 
Has. New Zealand. 
The determination is unsatisfactory, for no fruit male OF 
female occurs on our specimens. The fronds, however, wr 
