MARINE PROVINCES. 



159 



lY. Lusitanian Province. 



The Atlantic shores of France, Spain, Portuo-al, the Mediter- 

 ranean, Black Sea, and N. W. Africa, as far as Cape Jub}', form 

 an important province, extending westward in the Atlantic as 

 far as the Gulf-weed banks, so as to include Madeira, the Azores, 

 and Canary Islands. 



In the Atlantic portion of the province occur the following 

 genera, not met with in the Celtic and Boreal seas, althongh two 

 of them, Mitr-a and Ilesalia, occur on the coast of Greenland: — 



Argonauta. 

 Philonexis. 

 Chiroteuthis. 



Con us. 



Plenrotoma. 



Marginella. 



Cymba. 



MHra. 



Terebra. 



Cohimbella. 



Pisania. 



Dolium. 



Cassis. 



Triton. 



Ranella. 



Cancellaria. 



Sigaretns. 



Crepidula. 



Mesalia. 



Yermetus. 



Fossarus. 



Planaxis. 



Litiopa. 



Trnncatella. 



Solarium. 



Bifrontia. 



Turbo. 



Monodonta. 



Haliotis. 



Gadinia. 



Siphonaria. 



Anricula. 



Pedipes. 



Ringicula. 



Umbrella. 



Glaucus. 



Carinaria. 

 Firola. 

 Atlanta. 

 0x3' gyrus. 



Cleodora. 

 Cuvieria. 

 Creseis. 



Megerlia. 



Spondylus. 



Avicula. 



Solemya. 



Chania. 



Crassatella. 



Lithodomns. 



Ungulina. 



Galeomma. 



Cardita. 



C3'therea. 



Petricola. 



Yenerupis. 



Mesodesma, 



Ervilia. 



Panopaea. 



The great depth of the Gulf of Gascony has favored the 

 introduction of some boreal mollusks ; on the other hand, a few 

 African genera extend into the Mediterranean. 



France. Fischer catalogued in 1878, 569 species. Of these 

 336- are common to Great Britain and the Mediterranean ; 91 are 

 common to Great Britain, but not in the Mediterranean ; 82 are 

 common to the latter and not to the former ; and 60 appear to 

 be peculiar to the coast of France. 



SjMin and Portugal. These coasts are less known than any 

 other j)art of the province, but the facilities for exploration are 

 in some respects greater than in the Mediterranean, on account 

 of the tides. Shell-fish are much in demand as an article of 

 food, and the Lisbon market aftbrded to Mr. M 'Andrew the first 

 indication that the genus Cymba ranged so far north. 



On the coasts of the Asturias and Gallicia, especially in Yigo 

 Baj', Mr. M'Andrew obtained, by dredging, 212 species, of a 

 somewhat northern character, 50 per cent, of them being common 

 to Norway, and 86 per cent, common to the south of Spain. 



On the southern coast of the Peninsula 353 species were 

 obtained, of which onl^^ 28 per cent, are common to Norway- and 

 51 per cent, to Britain. 



