166 Scientific Proceedings, Royal Dublin Society. 



3. Description of the Specimens. 



Archceoealamites, Stur. 



Arehceocalamites, sp. 



Locality.— ^m^W quarry in sandstone, 30 feet below the top of cliff, 100 

 yards east of Ballyvoy Pier, Ballycastle coalfield, Go. Antrim. 



Description of the Specimens. — Two badly preserved easts in sandstone were 

 collected by the author in 1911. The best-preserved shows faint indications 

 of two nodes and of ridged internodes, and is no doubt a pith-cast referable to 

 Archceoealamites, though the preservation is too poor to admit of specific 

 determination. 



Adiantites, Gceppert. 



Adiantites antiquus (Ettingshausen). 



Plate XI, figs. 8 and 9. 



1865. Adiantum antiquum, . Ettingshausen, Denkschr. K. Acad. Wissen. 



Wien, vol. xxv., p. 22, fig. 7, pi. vii, fig. 1. 



1874. Aneimites adiantoides, . Schimper, Traite Paleont. veget., vol. iii., 



p. 490. 



1875. Adiantites antiquus, . Stur, Abhandl. K. K. Geol. Eeichsanst., 



Bd. viii., Heft, i., p. 66, pi. xvi, figs. 4-6 ; 

 pi. svii, figs. 3, 4. 



1888. Sphenopteris flabellata, . (;ja?'s),Baily, Mem. Greol.Surv. Ireland, 7-8, 



pp. 43, 47, fig. 9^1, (mow 9a, 9c) on p. 47. 



1889. Adiantites antiquus, . Kidston, Trans. Eoy. Soc. Edinb., vol. xxxv., 



p. 421, pi. i, fig. 1. 

 1903. Adiantites antiquus, . Kidston, Trans. Eoy. Soc, Edinb., vol. xl., 



p. 819. 



Locality. — '^^ook-i&QQ of cliff (Fair Head), about 400 feet above sea- 

 level, in yellow, ochreous sandstone," Ballycastle coalfield, Co. Antrim 

 (Baily, ihid.,-p. 41). 



Diagnosis.— 'Frond large, compound, (?) tripinnate, pinnae alternate, 

 pinnules entire, symmetrically cuneate, simple, or divided into two, three, or 

 four symmetrically, cuneate segments. Apex truncated or slightly rounded. 

 Veins radiating from base of pinnule or segment, with frequent dichotomy, 

 numerous and close. 



Description of the Specimens. — The original of Baily' s fig. 9&, (t. 3965 and 

 its counterpart t. 3973) is refigured, natural size, on Plate XI, fig. 8. The 



