of the Rocks associated with the Coal of Australia. 149 



wide ; sides straight, nearly parallel, pointed above, contracted 

 to a lengthened petiole below ; nerves equal, those of the mid- 

 dle third of the frond nearly parallel, straight, rather closer 

 than those of the sides, which gradually divaricate towards the 

 margin at a very acute angle ; all the nerves dichotomise at 

 irregular intervals, and those of the sides occasionally anasto- 

 mose and are connected by a few transverse bars. 



In this curious plant we have, as it were, a connecting link 

 between the genera Cyclopteris and Glossopteris, for although the 

 specimen I have drawn only exhibits the middle portion of the 

 frond, yet I have ascertained that the form is precisely that of a 

 narrow Glossopteris, being elliptical or pointed at the apex, and 

 tapering gradually to a lengthened petiole at the base, and still 

 further agreeing in the occasional anastomosing of the lateral 

 veins, and their being connected, though rarely, by transverse 

 bars ; yet it is impossible to refer it to that genus from the want 

 of the strong, characteristic midrib, the place of which is occu- 

 pied by numerous, dichotomous nerves of nearly the same thick- 

 ness as those of the sides ; I am therefore obliged to refer it to 

 Cyclopteris from a consideration of its more important characters, 

 although differing remarkably in form from the other species of 

 the genus as above restricted. The portion figured, of the middle 

 of a frond, measuring 3^ inches in length, and 9 lines wide at the 

 base, only tapers 2 lines. 



This species seems common in the gray shale of Guntawang, 

 Mudgee, N.S.Wales. 



Ord. Sphenopterides. 



Sphenopteris lobifolia (Mor.). 

 Common in dark brown shale, Mulubimba, N. S. Wales. 



Sphenopteris alata (Br.) sp. 

 Of large size in the fine gray sandstone of Mulubimba, N. S.W. 



Sphenopteris hastata (M'Coy). PL X. figs. 1 & 1 a. 



Sp, Char. Bipinnate; pinna? long, acutely lanceolate, with a 

 broad alate margin ; pinnules elliptical, obscurely undulato- 

 dentate, having three obsolete lobes on each side ; nerves bi- 

 pinnate, two branches reaching each lobe of the margin. 



The lengthened oval form, slightly indented margin, and simple 

 neuration of the pinnules fully distinguish this from any pub- 

 lished species of the genus. The average length of the pinna? is 

 about 1^ inch, width 4 lines, average length of leaflets 3 lines. 



Not uncommon in the shale of Mulubimba, N. S. Wales. 



