[114] Forel, Ann. Sci. Nat. (3) xx. p. 576; Bretonnière, Comptes Rendus, cvii. p. 566.
[115] Brit. Mus. Collection.
[116] Thomas, quoted by Récluz in Journ. de Conch. vii. 1858, p. 178.
[117] Nat. Hist. of Ceylon, p. 382. See also T. L. Taylor, Rep. Brit. Ass. for 1848, p. 82.
[118] Dr. R. E. Grant, Edinb. Phil. Journ. xiv. p. 188.
[119] Rep. Brit. Ass. for 1848, p. 80. The statement is confirmed by Rossmässler.
[120] Journ. of Conch. iv. p. 118.
[121] Zoologist, 1887, p. 29.
[122] Arch. Zool. Exp. Gén. (2) v. p. 459 f.
[123] Journ. of Conch. iii. p. 277; compare W. M. Webb, Zoologist, 1893, p. 281.