[54] Zoologist, xix. p. 7819.
[55] Naturalist, 1889, p. 55.
[56] H. W. Kew, l. c.
[57] W. G. Binney, Bull. Mus. C. Z. Harv. iv. p. 144.
[58] Naturalist, l. c.
[59] Science Gossip, 1885, p. 154.
[60] R. Standen, Journ. of Conch. vii. p. 197.
[61] Journ. of Conch. v. p. 43.
[62] A. Paladilhe in MS. letter.
[63] J. S. Gibbons, Quart. Journ. Conch. ii. p. 143.