A treatise on the geography and classification of animals / By William Swainson.

Swainson, William, 1789-1855.

Date:: 1835

Catalogue details

Licence: Public Domain Mark

Credit: A treatise on the geography and classification of animals / By William Swainson. Source: Wellcome Collection.

57/390 (page 41)

M. trunculus ( fig.9.), Byssoarca Noe Sw., Isocardia Cor; and many other smaller species, which would deserve a place in cabinets. It is also remarkable that, in these seas, the first indications of the conchology of the Asiatic region are found in such shells as Cav- dium cardissa, Cyprea mus, Chama gryphoides, Oliva (one species), Conus Virgo, C. monachus, and probably several other shells; the above being inserted in the list of Ulysses.* (56.) The fiuviatile shells of Europe are chiefly confined to its central latitudes. Those little sheltered streams, pools, and brooks, which are so abundant in this island, and which appear so congenial to these ani- mals, are very rarely seen in the warm countries of the Mediterranean, where the fervour of a summer sun would soon render them dry. In the deeper rivers however, of France and of Italy, some species of Unio, or freshwater muscle, are found, which we do not pos- sess. These are the Unio littoralis (fig. 10. a), the U. batava (5), and the Unio intermedius (c, c); the latter being a new species sent to us from Gibraltar. The land shells, on the other hand, are more numerous in Italy than in England ; and in certain situations, where the surface is rocky, several species aré found in the * Travels inthe Kingdom of Naples, 8vo. London, 1795.