Wright — Foraminifera obtained off the South-west of Ireland. 475 
Bolivina difformis, Williamson, sp. 
Textularia variabilis, var. difformis, Williamson, 1858, Eec. 
Por. Gr. Br., p. 77, pi. vi. figs. 166, 167. 
Found in all the gatherings ; common at 7 fathoms and 53 
fathoms. 
Bolivina dilatata, Eeuss. 
Bolivina dilatata, Eeuss, 1849, Denkschr. d. K. Ak. Wiss. Wien., 
vol. i. p. 381, pi. xlviii. fig. 15. 
Common at 7-750 fathoms. 
Bolivina senariensis, Costa, sp. 
Brizalina senariensis, Costa, 1856, Atti. dell' Accad. Pont., vol. 
vii. p. 297, pi. XV. fig. 1. 
Frequent at 345-1020 fathoms. 
Bolivina decussata, Brady. 
Bolivina decussata, Brady, 1881, Quart. Journ. Micr. Sci., vol. 
xxi. (ISr. S.) p. 58 ; " Challenger" Eep., p. 423, pi. liii. figs. 
12, 13. 
Common at 1020 fathoms. 
Bolivina quadrilatera, Schwager, sp. 
Textularia quadrilatera, Schwager, 1866, I^ovara-Exped. Geol. 
Theil., vol. ii. p. 253, pi. vii. fig. 103. 
This well-marked form I have referred to the genus Bolivina, 
and I may here observe that Bolivina may be readily known from 
Textularia, not only by the comma-shaped aperture, but also by 
the shells being of a hyaline texture ; in Textularia, with very 
few exceptions, the shells are more or less arenaceous. 
Frequent at 345 fathoms ; rare at 750 fathoms ; and very rare 
at 53 fathoms. 
Suh -family^ CASsinuiiNiN^. 
CASSIDTJLmA, d'Orbigny. 
Cassidulina laevigata, d'Orbigny. 
Cassidulina laevigata, d'Orbigny, 1826, Ann. Sci. ISTat., vol. vii. 
p. 282, JSTo. 1, pi. XV. figs. 4, 5 ; Modele, JSTo. 41. 
Found in all the gatherings, and common in most of them. 
