176 



Pterophyllum (?) dubia. Nou. sp. 



Leaf olongately oval, margins apparently entire, and not 

 divided into segments ; nerves very fine or obsolete, sunk in 

 the hard coriaceous integument, but the course of which can 

 be traced by close, gentle, regular, parallel undulations, pro- 

 ceeding from fine but strong midrib, at a moderately acute 



angle. 



It is difficult to find the true alliance of this very peculiar 

 species. Its form is suggestive of Maorotasniovteris, but the 

 character of its nerves, and its simple margin which seems to 

 be bordered by a hardened edge or a continuous marginal 

 nerve, leaves o'ne in little doubt of its cycadeous nature. 



It is a small specimen, imperfect at the base, and it is 

 significant that at the apex of Pterophyllum Strahani, mihi., 

 the segments seemed to coalesce. Greatest length, about 3i 

 inches ; greatest breadth, about 35 millimetres. 



It is possible, therefore, that this may be a rudimentary 

 frond of an allied species. The description, however, now- 

 given will enable others to identify the form, which is very 

 peculiar, and it is now named provisionally for the sake of 

 reference. 



CONIFERiE (Section Taxees— Renault). 

 Genus Baiera. 



Leaves coriaceous, or more or less cartilaginous ; divided 

 from the base into narrow linear segments traversed by 

 numerous fine parallel nerves. The nerves are finely divided, 

 and although at first sight they appear to be dichotomous, 

 they are long and simple in accordance with the length of the 

 segment. Female flowers are disposed at the extremities of 

 the pedicels several times bifurcate. Seeds articulated upon 

 the dichotomous divisions, and the ovate bearing shell or 

 covering swollen or inflated, much smaller than the cells of 

 the Salisburia. Male flowers, formed out of the outer woolly 

 covering, numbers of which bear towards the extremities of 

 branchlets 5 to 7 pollen clusters. 



Baiera tenni folia. Nou. Sp. 



Leaves coriaceous, divided dichotomously from base, like 

 the branching nerves of a fern, and superficially resembling 

 Sphenopteris linearis, Oarruthers. 



Segments narrow, linear, threadlike, traversed by roughly 

 wrinkled nerves, which appear to be dichotomous or discon- 

 tinuous but which traverse the whole length of the furcate 

 segments. Greatest breadth of segments varies between one 

 and two millimetres. Fragments of leaves from the three to 

 eight inches in length are very numerous in dark grey shales 



