BY A. B. WALKOM. 183 



C Y < A linPH VTA. 



< 'ycadites sp. 



(.')(' V < \ |) O !' M v T A. 



Tivniopteris spatulata McClelland. 

 Tii'niojtteris Tenison-Woodsi Etheridge Junr. 

 Con i r i; r; \ l es. 



Araucarites cutchensis Feist mantel. 

 Araucarites (Podozamites) gracilis Arber. 

 Araucarites (Podozamites) sp. 



Description of Specimens. 



CONIOPTERIS HYMENOPHYLLOIDES \ ar. AUSTRALICA Seward. 

 (Plate vii., figs. 2, 3, 1.) 



1904. Goniopteris hymenophylloides var. australica Seward, 

 Rec. Geol. Survey Victoria, Vol.1, Pt.3, p.163, figs. 6 9. 



It is not necessary to repeat the full synonymy of the species 

 here, as it has already been given in considerable detail by 

 Seward* and Arber. f 



Coniopteris hymenophylloides is a well-known species with a 

 very wide geographical distribution in rocks of Jurassic age, and 

 its description by Seward, based largely on material from Jurassic 

 plant-beds of the Yorkshire Coast, is as follows: "Frond tri- 

 pinnate: pinnse linear acuminate, attached to the rachis at a wide 

 angle; the pinnules vary considerably in size and shape, in some 

 forms they have a few broad and rounded lobes, and in others 

 the lamina is deeply dissected into narrow, linear segments. 

 The fertile pinnules bear the sori at the ends of the veins; the 

 lamina is usually much reduced, and in extreme cases the fertile 

 segments agree closely with those of Thyrsopteris elegans K/.e.) 

 or Dick8onia Bertevcma Hook. The sori are partly enclosed in a 

 cup shaped indusium; the sporangia appear to have an oblique 

 annulus of the cyatheaceous type. The two lowest pinnules of 

 the pinna are often characterised by their unusual shape, the 

 lower half of each pinnule consisting of long, spreading, and 

 aphlebia-\\k& lobes." + 



* Rec. Geol. Survey Victoria, i.. p. 163. 

 t X. Zeal. Geol. Survey, Pal. Bull. 6, p.32. 



X Seward, op. cit., p. 164. 



