1870. | TATE—N.E, IRELAND MIDDLE LIAS. 325 
and cultivated patches of drift,” and conjectured by the discoverer 
to have been derived from the immediate vicinity ; but up to the 
present time they have not been referred to their parent site. 
I have determined the following species :— 
. Ammonites margaritatus, Mon¢f. 
. Ammonites Henleyi, Sow. (on the authority of Mr. R. Htheridge), 
. Belemnites umbilicatus, B/. 5 
. Pitonillus turbinatus, Moore. 
Pecten liasinus, Myst. 
Pecten acutiradiatus, Schloth. 
. Plicatula spinosa, Sow. 
. Cypricardia cucullata, Goldf. 
. Isocardia cingulata, Goldf. 
10. Limea acuticosta, Goldf. 
11. Avicula novemcostx, Brown. 
12. Rhynchonella acuta, Sow. 
13. Rhynchonella variabilis, Sch/oth. 
14. Waldheimia numismalis. 
15. Pentacrinus, sp. 
16. Hybodus reticulatus, 4g. ? 
DOONIAAP Ot 
With the exception of Plicatula spinosa, Avicula novemcoste, and 
Rhynchonella variabilis, which range throughout the Lower and 
Middle Lias, the majority of the determined species indicate an 
horizon below the Marlstone but above the highest beds of the Lower 
Lias. The close similarity in lithological composition, and in part 
in fossiliferous contents, between the Pabba shales* and the blocks 
found at Ballintoy suggests the probability of the latter having been 
transferred during glacial times from the Hebrides. 
Nevertheless the sandstone blocks from Ballintoy belong unques- 
tionably to the Middle Lias, and appertain to the lower division, 
which includes the Jamesoni-bed, the /bea-bed, and the Capricornus- 
bed, and are contemporaneous (if not conterminous) with the Pabba 
Shales. 
Frsrvary 23, 1870. 
Alexander G. H. Harding, Esq., of King’s College, and 39 Wo- 
burn Place, Russell Square, W.C.; Thomas Adair Massey, Ksq., 
Barrister-at-Law, 6 Crown Office Row, Temple ; and Samuel Has- 
lett, Esq., Ann Street, Belfast, were elected Fellows of the Society. 
The following communications were read :— 
* Geikie, Quart. Journ. Geol. Soc. vol. xiv. p. 5 (1858). 
