82 



MANUAL OF THE MOLLUSCA. 



Trochita radians. 

 Crepidula dilatata. 

 Fissurella, many sp. 

 Liotia Cobi.jensis. 

 Gadinia Peruviana. 

 Littorina Periivituia, 

 „ araucana. 

 Eissoina Inca. 

 Cancellaria buccinoides, 

 Sigaretus cymba. 

 Fusus Fo'itainei. 

 Murcx liorridu^. 

 Ranella ventricosa. 

 Triton scaber. 

 Nassa dentifera. 

 Columbella sordida. 



Oliva Peruviana. 



Eapana labiosa. 



Monoceros giganteus. 

 „ crassilabris, 



,, acuminatum. 



Pui-pura cliocolata. 



Concliolepas. 



Mitra maura. 



Terebratella Fontainei. 

 „ Cliileusis, 



Discina lamellosa. 

 „ Isevia. 



Pliolas subtiTincata, &c. 

 Lyonsia cuneata. 



Solen gladiolus. 

 Solecurtus Dombeyi. 

 Mactra BjTonensis. 

 Mesodesma Chilensif>. 

 Cumingia lamellosa. 

 Semele rosea, &c. 

 Petricola, many sp. 

 Saxidomus opacus, &c. 

 Cj'cliua Kroyeri. 

 Venus thaca. 

 Crassatella gibbosa. 

 Nucula, many sp. 

 Leda, many sp. 

 Solenella Korrisii. 

 Lithodomus Penivianus. 

 Saxicava solida. 



Xy. Magellanic Peovixce. 



This region includes the coasts of Tierra del Fuego, the Falk- 

 land Islands (Malvinas), and the mainland of South America, 

 from P. Melo, on the east coast, to Concepcion, on the west. It 

 is described by M. D'Orbigny and Mr. Darwin (Journal, p. 177 

 et seq.). Philippi also has given attention to it; he assigns 88 

 species to the district near the Straits of Magellan. Only 15 

 species are known from the Malvinas, and 11 of these have not 

 been met with elsewhere. The southern and western coasts are 

 amongst the wildest and stormiest in the world ; glaciers in 

 manj' places descend into the sea, and the passage round Capo 

 Horn has often to be made amidst icebergs floating from the 

 south jDolar continent. The greatest tides in the straits amount 

 to 50 feet. " In T. del Fuego the giant sea- weed {Macrocystia 

 pyrifera) grows on every rock from low- water mark to 45 

 fathoms, both on the outer coast and within the channels ; it 

 not only reaches up to the surface, but spreads over many 

 fathoms and shelters multitudes of marine animals, including 

 beautiful compound Ascidians, various patelliform shells, Trochi, 

 naked mollusca, cuttle-fish, and attached bivalves. The rocks, 

 at low water, also abound with shell-fish which are very dif- 

 ferent in their character from those of corresponding northern 

 latitudes, and even when the genera are identical the species are 

 of much larger size and more vigorous growth."* 



Shells of the Magellanic Province (* Falkland Islands). 

 Bucciniim antarcticum. Monoceros imbrioatus. Trophon Magellanicu3. 



„ Donovani? „ glabratus. Voluta Magellanioa. 



BuUia cochlidium. „ calcar. „ ancilla. 



* Shell-fish are here the chief support of the natives as well as of the wild animals. 

 At Low's harbour a sea-otter was killed in the act of carrying to its hol^ a large 

 Volute, and in T. del Fuego one was peen easing a cuttle-fish.— yJaj-irin. 



