LUSITANIAN PEOTINCE. 65 



somewliat nortliem character, 50 per cent, of them being com- 

 mon 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 only 28 per cent, are common to Norway and 

 51 per cent, to Britain. 



The identical species are chiefly amongst the shells dredged 

 from a considerable depth (35 — 50 fathoms) ; the littoral species 

 have a much more distinct aspect. 



The shells of the coast of Mogador are generally identical 

 with those of the Mediterranean and Southern Peninsula. 



Canary Islands. The shells of the Canaries collected by MM. 

 Webb and Berthelot,* and described by M. D'Orbigny, amount 

 to 124, to which Mr. M'Andrew has added above 170. Of the 

 300 species 17 per cent, are common to Norway, 32 per cent, to 

 Britain, and 63 per cent, to the coasts of Spain and the Medi- 

 terranean. Two only are "W. Indian shells, Neritina viridis and 

 Columhella cribaria. Of the African shells found here, and not 

 met with in more northern localities, the most remarkable are : — 



Crassatella divaricata. Eanella laevigata. Cymba proboscidalia. 



Cardium costatum. Cassis flammea. Conus betiilinus. 



Lucina Adaiisoni. „ testiculus. „ Prometheus. 



Cerithium nodulosum. Cymba Neptuni. „ Guinaicus. 



Murox saxatilis. „ porcina. „ papilionacexis. 



Madeira. Mr. M 'Andrew obtained 156 species at Madeira, of 

 which 44 per cent, are British, 70 per cent, common to the 

 Mediterranean, and 83 to the Canaries. Amongst the latter 

 are the two W. Indian shells before mentioned, and the follow- 

 ing African shells : — 



Pedipes. Mitra fusca. Patella crenata. 

 Littoriiia striata. „ zebrina. „ guttata. 



Solarium. Marginalia guancha. „ Lowei. 



Scalaria cochlea. Cancellaria. „ Candei. \ 



Natica porcellana. Monodonta Bertheloti. Pecten corallinoides. 



Azores. Amongst the littoral shells which range to the 

 Azores, are Pedipes, Littorina striata, Mitra fasca, and Ervilia 

 castanea; the other species obtained there are Lusitanian. 

 {^M'Andrew.) 



The Mediterranean fauna is known by the researches of Poli, 

 Delle Chiaje, Philippi, Verany, Milne-Edwards, Professor E. 

 Forbes, and Deshayes. In its western part it is identical with 

 that of the adjacent Atlantic coasts ; the number of species 

 diminishes eastward, although reinforced by a considerable 



* Hist. Naturelle des lies Canaries ; the list of shells is reprinted, with the additions 

 made by Mr. M' Andrew, as one of the Catalogues of the British Museum. 



