Miscellanea. 305 



and which may explain the nature of certain vertical strise visible 

 on the perpendicalar fracture, crossing the horizontal lines which 

 mark the edges of the leaves. 



This species is abundant in the whitish shales and clays of 

 Mulubimba, N. S. Wales. 



{Al. Filices). 

 Ord. Gleicheniacete. 

 Gleichenites odontojjteroides (Mor.) sp. 

 Syn. Pecopteris odontopteroides (Mor.) in Strzelecki's N. S. Wales- 

 Having obtained a finely preserved frond of this plant distinctly 

 forked in the manner of Glewhenm, I have removed it from 

 Pecopteris, in v/hich it was placed by Mr. Morris, and transferred 

 it to the order GleicheniacecB without hesitation ; and taking the 

 verbal characters of Goppert's genus Gleichenites — " Frons 

 dichotoma pinnata. Fructificatio hucusque ignota," — I think there 

 can be no objection to placing it in that genus, although very 

 distinct from his two species G. artemisicBf alius widi G. critmi.folius. 

 I might also suggest its relation to the Lias and Keuper genus 

 Heptacarpus, with some of the German species of which it 

 generically coincides. 



In the sandstone of Clark's Hill, N. S. Wales. 



Ord. Neuropterides. 



Odontop)teris microphjlla (M'Coy). Not figured. 



Sp. Char. Bipinnate ; pinnee alternate, oblique, narrow, about three 

 lines wide and two inches long ; pinnules alternate, oblique, 

 slightly connate at the base, obtusely elliptical, their length only 

 equalling the width of their base; no midrib, secondary neuration 

 indistinct. 



The only Odontopteris approaching this elegant species by its 

 alternate pinnae and very short connected pinnules is the O. 

 Sclilotlieimii (Br.), from which it is distinguished by the smaller 

 size, much narrower and more oblique pinnee, and by the 

 pinnules being proportionally smaller and elliptical instead of 

 broadly rounded. The latter character also separates it from the 

 so-called Pecopteris Desnoijersii (Br.) of the 'Oolithe a Foiigeres' 

 of Mamers, Sarthe. 



Common in the fine sandstone of Clark's Hill, N. S. Wales. 



Otopteris, Lind. and Hut. , 

 AVith Messrs. Lindley and Button I use this term for those pin- 

 nated plants, the leaves of which agree with Cijclopteris in their 

 neuration. Some of these forms were originally described by 

 Lindley and Hutton (Fossil Flora) as Cyclopteris, under the im- 

 pression that the rachis was a rhizoma ; Brongniart (Prodrome 

 and Hist, des Vegetans Foss.) gives several of them as Neuropteris, 

 apparently neglecting the important character of want of midrib. 

 Goppert confounds both the simple and compound fronds in his 

 AdianLites (Syst. Fil. Foss. in Nova Acta Acad. Css. Leop. Cur. 

 Nat.), and Unger does the same under the head Cyclopteris (Chloris 

 Protogsea). I have, however, thought it desirable to use the term 



