554 DR. GWYN JEFFREYS ON THE MOLLUSCA OF THE [Jimel", 



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 my 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 scien- 

 tific 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. 



CONCKIFERA. 

 Family I. Anomiid^e. 



1. Anomia 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. 1869: St. 1, 3, 13, 14, 18, Loch Foyle, 39, 

 47, 70. 1870 : Atlantic, 1, 2, 3, G, 8, 9, 10, 12, Vigo Bay, 10, 17, 

 Ma, 24, 26, 27, 28, 28«, 29, 30, 36; Mediterranean, 45, Capo de 

 Grata, 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 1870 was attached 

 to the spines of Cidaris papillaia. 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), Corea. Depths, low water to 1450 fathoms. 



Fossil. Pliocene and Post-tertiary. Scandinavia, Great Britain 

 and Ireland, Belgium, Vienna Basin, South of France, Italy, Morea, 

 Bhodes, Nantucket I. Heights 0-460 feet. 



Professor Verrill has lately separated the North-American form 

 from ours under the specific name glubra ; but I cannot detect any 

 characteristic difference between them. This makes the 36th 



