462 
Proceedings of the Roijal Irish Academy. 
Sub-hi7igdom, PROTOZOA. 
Class, Rhizopoda. 
Order, FORAMINIFERA— (RETICULARIA). 
Family, Miliolid^. 
Sub-family, MmoLiNiNiE. 
BILOCULINA, d'Orbigny. 
Biloculina irregularis, d'Orbigny. 
Biloculina irregularis, d'Orbigny, 1839, Foram. Amer. Merid., 
p. 67, pi. viii. figs. 22-24. 
Yery rare at 345 fathoms and 750 fathoms. 
Biloculina sphsera, d'Orbigny. 
Biloculina sphaera, d'Orbigny, 1839, Eoram. Amer. Merid., 
p. 66, pi. viii. figs. 13-16. 
Yery rare at 53-750 fathoms. 
Biloculina bulloides, d'Orbigny. 
Biloculina bulloides, d'Orbigny, 1826, Ann. Sci. IS'at., vol. vii. 
p. 297, 1^0. 1, pi. xvi. figs. 1-4; Modele ISTo. 90. 
Yery rare at 345-1020 fathoms. 
Biloculina ringens, Lamarck, sp. 
Miliolites ringens, Lamarck, 1804, Ann. du Museum, vol. v. 
p. 351 ; vol. ix. pi. xvii. fig. 1. 
Frequent at 7 fathoms and 53 fathoms ; rare at 345 fathoms 
and 750 fathoms. 
Biloculina ringens, var. elongata, d'Orbigny. 
Biloculina elongata, d'Orbigny, 1826, Ann. Sci. Kat., vol. vii. 
p. 298, ^0. 4. 
Yery rare at 345 fathoms. 
Biloculina depressa, d'Orbigny. 
Biloculina depressa, d'Orbigny, 1826, Ann. Sci. Kat., vol. vii. 
p. 298, ISTo. 7 ; Modele, IS'o. 91. 
Frequent in shallow water ; very rare at 345 fathoms. 
Biloculina depressa, var. murrhyna, Schwager. 
Biloculina murrhyna, Schwager, 1866, Ifovara-Exped., Geol. 
Theil, vol. ii. p. 203, pi. vi. figs. 15, a-c. 
At 750 fathoms and 1020 fathoms. 
