480 
Proceedings of the Royal Irish Academy, 
Lagena hexagona, Williamson, sp. 
Entosolenia squamosa, var. hexagona, "Williamson, 1848, Ann. 
and Mag. !Nat. Hist., ser, 2, vol. i. p. 20, pi. ii. fig. 23. 
Frequent at 7-1020 fathoms. 
Lagena hertwigiana, Erady. 
Lagena hertwigiana, Brady, 1881, Quart. Journ. Micr. Sci,, 
voL xxi. (JS". S.) p. 62 ; "Challenger" Eep. p, 470, pi. xviii. 
fig. 36. 
Very rare at 750 fathoms. 
Lagena Isevigata, Keuss. sp. 
Eissurina Isevigata, Reuss, 1849, Denkschr. d. k. Akad. Wiss. 
Wien, vol. i. p. 366, pi. xlvi. fig. 1. 
Found in all the gatherings ; common at 53 fathoms. 
Lagena l^vigata, var. lucida, Williamson, sp. 
Entosolenia marginata, var. lucida, Williamson, 1858, Eec.Eor. 
Gr. Er., p. 10, pi. i. figs. 22, 23. 
Frequent at 53 fathoms ; common at 7 fathoms. 
Lagena laevigata, var. quadrata, Williamson, sp. 
Entosolenia marginata, var. quadrata (pars), Williamson, 1858, 
Eec. For. Gr. Br., p. 11, pi. i. fig. 27 ; Wright, Belfast i^at. 
Field Club, 1886, Appendix, pi. xxvi. fig. 9. 
Yery rare at 53 fathoms and 345 fathoms; frequent at 7 
fathoms. 
Lagena lasvigata, var. aperta, Seguenza. 
Fissurina aperta, Seguenza, 1862, Foram. Monotal. Mess., 
p. 60, pi. i. fig. 60. 
Lagena faba, Balkwell and Millett, 1884, Journ. Micr. and 
Nat. Sci., vol. iii. p. 81, pi. ii. fig. 10. 
Frequent at 7 fathoms and 53 fathoms. 
This small and somewhat obscure form is not unfrequent in 
shallow water gatherings around the Irish coast. 
Lagena fimbriata, Brady. 
Lagena fimbriata, Brady, 1881, Quart. Journ. Micr. Sci., vol. 
xxi. (]S[. S.) p. 61. 
Eare at 7 fathoms and 750 fathoms ; frequent at 53 fathoms 
and 345 fathoms. 
