THE ANNALS AND MAGAZINE OF NATJURAL HISTORY. [FIFTH SERIES.] No. 66. JUNE 1883. XLIX.-jfediterranean Mollusca (No. 3) and other Inver-tebrata. By J. GWYN JEFFREYS, LL.D., F.R.S. [Plate XVI.] IN the 'Annals and Magazine of Natural History ' for July 1870, I gave a list of some species dredged by Capt. (now Admiral) Spratt and Capt. (now Sir George) Narcs in parts ofthe Mediterranean,at depths ranging from 20 to310 fathoms; and in the December number for the saine year I addcd some remarks on the list. Since that time have appeared numerous publications by Professor Aradas, Sr. Benoit, Abb� Brugnone, Prof. Brusina, M. Cl�ment, MM. Dautzenberg and Dollfus, M. Dubreuil, Dr. Fischer, Dr. Foresti, Sr. Granata-Grillo, M. Granger, Dr. Hidalgo, Prof. Issel, Herr Kl�cak, Dr. Ko-belt, Prof. Marion, Prof. v. Martens, the Marchese de Montero-sato, M. Morlet, Dr. Schneider, Prof. Seguenza, Prof. Stalio, Sr. M. Stossich, Dr. Tiberi, M. Vayssi�re, Herr Weinkauff, and myself. I mention the above list of writers to give some idea of the extent to which this favourite branch of natural history has been carried of late years; but I would especially invite at-tention to the very useful catalogue of the Marquis de Mon-terosato, who has done so much to promote our knowledge of Ann. & Mag. N. lHist. Ser. 5. Vol. xi. 27