19 



Cliemnitzia scalaris 



,, iii(listiui-ta ? 



Odostoiuia conoidea 



,. acuta* 



,, spiralis * 



Eulimella acieula* 



„ Seilloe • 



Truncatella Jlontagui* ' 

 Natica monilifera ? 



„ nitida 



„ sordida * 

 Velutina lce^•igata 

 Lammellaria perspiciia 

 Ceritliiopsis tuberculare?' 

 Murex eiinaceus 



„ corrallinus 

 Lachesis minima 

 Purpura lapHlus 



Xassa reticulata 

 ,, iucrassata 

 ,, pygmcea 



Trophon muiicatus 



Maugelia septangularis 

 „ teres 

 ,, Lefroyi 



Mangelia linearis 

 „ gracilis 



,, brachystoma 



„ purpurea 



attenuata 

 costata 

 „ striolata 



,, nebula 



C\'prcea Europea 



Ovula acuminata 



Marsinella Icevis 



Gasxeropoda opis- 

 thobranchiata. 



Cylichna cj-Undracea 

 ,, truncata 

 ,. mamillata 

 ,. lunbilicata 

 ,, strigella * 



TornateUa fasciata 



Akera bullata 



Bulla liydatis 

 ,, Crancbii • 



Scapbander liguarius 



Pbiline aperta 

 „ scabra 

 „ catena • 



Aplysia hybrida ♦ 



SUewing in proportion witli the British species- 



Acepbala lamellibrancbiata 



Acephala palliobranchiata 



Pteropoda 



Gasteropoda prosobrancbiata . 

 Gasteropoda opistbobrancbiata. 



li-i iu I'o'i, or 75 per cent. 



■i ,. 5, „ iO 



1 ,. -i, „ 25 



107 „ 309. „ 51 



U „ 35, „ 5() 



Total of British marine testaceous mollusca, common to the ]S'orth <>f 

 Spain, 24(5 in 406, or 01 per cent. 



All the species common to Britain and the North of Spain, are like- 

 wise met with in the South Peninsula or Mediterranean except nineteen, 

 viz., niactra soUda, and those already enumerated as Scandinavian 

 species, found in the North of Spain, but not to the southward of Cape 

 St. Vincent. Consequently the South Peninsular and Mediterranean 

 species, compared with the British are — 



Acepbiila lanielliliraucbiata Ill) in KiS, or 71 percent. 



Acepbala palliobrancliiata 1 ,, 5, ,. 30 ,, 



I'teropoda 1 in 4, or 35 jier cent. 



Gasteropoda prosobrancbiata ... !)3 ,, 30!), ,, 43 



Gasteropoda opistbobrancbiata... 14 ,, 35, ,, 5U ,. 



Total of British marine testaceous mollusca, common to the South of 

 Cape St. Vincent and the Mediterranean, ^27 iu 40B, or 56 per cent. 

 Tlie following British species have been obtained in the Canary Islands. 



Acephala lamelm 

 lranchiata. 

 'rcrcdo navalis ? 

 SiixicHVrt articii 



Venerupis irus 

 (^oi-buhi nucleus 

 Neo'i'H coslcllatii 

 cusjiiibitii 



I'nndora rostrata ;' 



., obtusa 

 'I'liiiicia pliaseolinii 

 pubcsceus 



