152 Mr. F. M'Coy on the Fossil Botany and Zoology 



wide in the middle. Disconnected fragments show that the base 

 diminishes insensibly to a lengthened petiole, as in the G. Brown- 

 iana, and that the apex is elliptical and pointed. 



Very abundant in the gray shale of Wollongong ; not uncom- 

 mon in the hard siliceous schists of Arowa, N. S. Wales. 



Pecopteris ? tenuifolia (M'Coy). PI. IX. fig. 6. 



Sp. Char. Bipinnatifid (?) ; pinnules and rachis very slender, 

 each about half a line wide; pinnules very long, oblique, 

 linear, apparently simply united to the rachis by their entire 

 base, one very strong midrib running throughout ; secondary 

 nerves unknown. 



If this be truly a Pecopteris, it is distinct from all others by 

 its very narrow, linear leaflets. The only plant I have seen at 

 all resembling it is the Zamites obtusifolius from the shale of the 

 oolitic coal-fields of Blackheath, Richmond, United States, exhi- 

 bited some weeks since by Mr. Lyell to the Geological Society. 

 The specimens alluded to of this latter plant seem imperfectly 

 preserved, but still show, on some portions of the pinnules, a 

 neuration running parallel with a strong midrib. This great 

 midrib seems to me incompatible with Zamites, so that although 

 I point to the resemblance between the American and Australian 

 plants, I prefer placing the latter provisionally in Pecopteris, as 

 I have seen no trace in my imperfectly preserved specimens of a 

 parallel neuration ; and even if it should hereafter be found to 

 exist, I conceive it would be necessary to form a new genus, in- 

 termediate in form, neuration, and (I think) mode of attachment 

 of the pinnules to the rachis, between Zamites and Pecopteris, for 

 the reception of those two plants. 



One specimen has occurred in the fine sandstone of Clark's 

 Hill, N.S.Wales. 



Class Endogens. (AL Palmales.) 



Ord. PALMACEiE. 



Zeugophyllites elongatus (Mor.). 

 Common in the shales of Mulubimba, N. S. Wales. 



Class Exogens. {Al. Amentales.) 



Ord. CasuarinacejE (?). 



Phyllotheca (Br.). 



M. Brongniart, in his ' Prodrome/ founds this genus for a 

 single species, the P. australis, of which he mentions having a 

 large number of well-preserved specimens, which he describes as 

 "des tiges simples, droites, articulees, entourees de distance 



