04 YORKSHIRE NATURALISTS UNION. 



Carpolithus bivalvis Gopp. 



CarpolWins bivalvis Gopp. & Berger, De fruct. et semin.,p. 



26, pi. ii, figs. 30, 31. 

 Carpolithus bivalvis Kidston, Trans. Geo!. Soc. Glas., vol. viii, 



p. 71, pi. iii, fig. 7. 

 Middle Coal Measures. 



Hor. — Barnsley Thick Coal. Locs. — East Gavvber Colliery, 

 near Barnsley (Hemingway). Monckton Main Colliery, 

 near Barnsley (Hemingway). 



Remarks. — The Carpolithus perpusillus Lesqx. (Coal 

 Flora, vol. iii, p. 825, pi. cxi, figs. 22 — 24), if not similar 

 to these little seeds, seems very closely related to them. 



PINNULARIA L. & H. 

 Pinnularia prostrata Artis, sp. 



Hydatica prostrata Artis, Antedil. Phyt., pi. i. 

 Hydatica columnaris Artis, Ibid., pi. v. 

 Note. — Generally distributed. 



GNETACEiE. 



GNETOPSIS Renault & Zeiller. 

 Gnetopsis Ren. ^ Zeiller, Cours d. botan. foss., quatr. annee 

 1885, p. 179. 



Gnetopsis sp. 



Middle Coal Measures. 



Hor. — Barnsley Thick Coal. Loc. — Monckton Main 

 Colliery, near Barnsley (Hemingway). 



Note. — Genus now removed from the vegetable 

 kingdom. It has been shewn by Renault and Zeiller, that 

 the species of the curious genus Palceoxyris Brongt., whose 

 systematic position has so long been enveloped in obscurity, 

 are with little doubt the eggs of sharks (See 'Sur I'attribution 

 des genres Fayolia et Palceoxyris^ ; Comptes rendus, 

 17 Dec. 1888). 



Geol, Trans, Y.N.U., 1S88 (pub, jSgo). 



