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Show 554 DR. GWYN JEFFREYS ON THE MOLLUSCA OF THE [June 17, of which the plates which accompany this paper will supply the necessary illustrations. I consider it useless to add every synonym, a kind of work that serves no other purpose than to display the industry of the writer. For the same reason the authority for any locality mentioned in this paper is omitted, although I am prepared to name it. The position of each station, and the corresponding depth will be found in the introduction to the first part. I prefer describing new species in m y own language, instead of in dog-latin ; and of course my continental friends are entitled to a similar privilege. The time has long passed since a knowledge of any of the principal languages of Europe was confined to its own country, when it was thought desirable to substitute Latin in scientific treatises. It should also be borne in mind that English is much more generally spoken and used than any other language in the civilized world. Latin cannot be applied with sufficient precision and intelligibility to the description of Natural-History specimens. For instance, we know next to nothing of the colours designated by classical names; yet conchologists do not hesitate to use such barbarous words as "griseus," "ochroleucus," "spadiceus," " au-rantius," and " olivaceus," which appear in the works of Philippi and other authors of repute, but not in any good Latin dictionary. The present work will form an additional supplement to ' British Conchology,' so far as regards our native Mollusca. CONCHIFERA. Family I. ANOMIID,E. 1. ANOMI A EPHIPPIUM, Linne. Anomia ephippium, L. Syst. Nat. ed. xii. p. 1150: British Conchology, ii. p. 30, pi. i. f. 4; v. p. 165, pi. xx. f. 1. * Lightning ' Expedition : Stations 2, 3, 4, 5. ' Porcupine' Exp. 1809: St. 1, 3, 13, 14, 18, Loch Foyle, 39, 47, 70. 1870: Atlantic, 1, 2, 3, G, 8, 9, 10, 12, Vigo Bay, 1G, 17, \7a, 24, 26, 27, 28, 28a, 29, 30, 36; Mediterranean, 45, Capo de Gata, 50, Gulf of Bona, G. Tunis, Adventure Bank. Variously shaped and sculptured. A specimen of the variety aculeata is partly smooth, and in that respect exactly like the young form or squamula ; the variety cylindrica in Stations 1 of 1869 and 18/0 was attached to the spines of Cidaris papillala. In some of the specimens the byssal orifice is unusually small. Distribution. Type and varieties. Iceland to Egypt and Madeira, Labrador to Long Island Sound, 'Challenger' Exp. (coast of Brazil), Corca. Depths, low water to 1450 fathoms. Fossil. Pliocene and Post-tertiary. Scandinavia, Great Britain and Ireland, Belgium, Vienna Basin," South of France, Italy, Morea, Rhodes, Nantucket I. Heights 0-460 feet. Professor Verrill has lately separated the North-American form from ours under the specific name glabra; but I cannot detect any characteristic difference between them. This makes the 36th |