[371] A. H. Cooke, P. Z. S. 1892, pp. 447–469.
[372] Mysol, with 2 Chloritis, 1 Insularia, 1 Cristigibba, is decidedly Papuan.
[373] See especially C. Hedley, Note on the Relation of the Land Mollusca of Tasmania and New Zealand, Ann. Mag. Nat. Hist. (6) xiii. p. 442.
[374] Hedley and Suter, Proc. Linn. Soc. N. S. Wales (2), vii. p. 613. Twenty-one species are “introduced.”
[375] Nine species have been introduced: 6 from Europe, 2 from the West Indies, 1 from the Western Isles.
[376] It is by no means implied that unbroken land communication between India and Madagascar, across the Indian Ocean, ever existed. A series of great islands, whose remains are attested by the Chagos and other banks, would be quite sufficient to account for the results, as we find them. See especially Medlicott and Blanford, Geology of India, vol. i. p. lxviii.
[377] Journ. Cinc. Soc. Nat. Hist. iii. p. 317. The number is doubtless susceptible of very considerable reduction, say by one-half at least.
[378] Simpson, Amer. Nat. xxvii. 1893, p. 354.
[379] Compare von Martens, Malak. Blätt. 1868, p. 169; von Ihering, Nachr. Deutsch. Malak. Gesell. 1891, p. 93.
[380] The distribution of some Pteropoda has been worked out by Munthe, Bih. Svensk. Ak. Handl. XII. iv. 2, by Pelseneer “Challenger” Rep., Zool. xxiii., and by Boas, Spolia Atlantica.