[294] Shell-Eyes in other Mollusca.—The Rev. J. E. Tenison-Woods (Trans. Linn. Soc. N. S. Wales, xxii. p. 106) is of opinion that ‘shell-eyes’ are by no means confined to the Chitonidae, but that, in fact, multiplicity of eyes of this kind is the rule rather than the exception among the Mollusca. He finds (1) exceedingly minute and numerous ‘eyes’ on the outer surface of the shell in both univalves and bivalves; (2) large and solitary ‘eyes’ in the shell substance; (3) eyes on the mantle lobes in both univalves and bivalves; (4) eyes on the opercula.
[295] Mitth. Stat. Zool. Neap. v. p. 447 ff.
[296] W. Patten, Mitth. Zool. Stat. Neap. vi. (1886) pp. 546, 605 f.
[297] Benderloch, p. 136.
[298] Quart. Journ. Micr. Soc. xx. p. 443.
[299] Quart. Journ. of Conch. i. p. 368.
[300] British Conchology, i. p. xxviii.
[301] Science Gossip, 1865, p. 259.
[302] Mollusques de France, i. p. 130.
[303] E.g. Sochaczewer, Zeits. wiss. Zool. xxxv. p. 30.