13 



Cerithium adversum 

 ,, metula 



Scalaria Greenlandica 

 ,, Turtonis 

 „ communis 

 ,, Tre^^lliana 



Aclis supranitida 



Stylifer Turtoni 



Eiilima subulata 

 ,, distort a 

 ,, polita (nitida) 



Chemnitzia nifa 



Odostomia Waireni 

 ,, conoidea 



„ spiralis 



,, rissoides 



„ eiilimoides 



Eulimella Scilloe 



Natica monilifera 

 „ nitida 

 „ pusiUa 

 ,, Montagui 

 ,, helicoides 



Velutina Luvigata 



„ liexilis 

 Lamellaria perspicua 



,, tentaculata 



Trichotropis borealis 

 Murex erinaceiis 

 Pui-pura lapiUus 

 Nassa reticixlata 



,, incrassata 

 Buccinum undatum 



„ Humphrey sianum 

 Fiisus Islandicus 



„ antiquus 



,, Noi-vegicus 

 Troplion clathratulus 



,, Bameensis 

 Mangelia turricnla 



„ Trevilliana 



„ riifa 



,, nana 



,, teres 



,, linearis 



„ nebula 



Mangelia costata 



,, attenuata 



Cyprtiea Europea 

 Ovula acuminata 

 MargineUa loevis 



Gasteropoda Opistho- 

 beanchiata. 



Cylichna cylindracea 



„ tnmcata 



,, nitidula 



„ strigella 



„ urabilicata 

 Amphispira hyalina 

 Tomatella fasciata 

 Akei-a bullaia 

 Bulla Cranchii 

 Scaphander lignarius 

 Philine aperta 



„ quadrata 



„ scabra 



„ pruinosa 

 Aplysia hybrida 



Showing the proportion to Scandinavian species of — 



Acephala lamellibranchiata 97 in 134, or 78 per cent. 



Acephala palliobranchiata 4 ,, 5, ,, 80 ,, 



Pteropoda — i, 3 — 



Gasteropoda prosobranchiata 101 ,, 136, „ 75 ,, 



Gasteropoda opisthobranchiata 15 „ 31, ,, 71 ,, 



Total of testaceous moUusca, common to the west of Scandinavia and 

 the British seas, 217 in 289, or 75 per cent, of the former. 



The Scandinavian species found on the north coasts of Spain, in- 

 ckiding Vigo, are the following. — N.B. Some of them which I have 

 not actually procured within the district, are included in consequence 

 of their having been met with farther south, and these are distinguished 

 by the addition of their locality : — 



ACEPH.VLA LAMEIXI- 



BRANCHIATA. 



Teredo navalis, Canaries 



and Madeira 

 I'liolas Candida, Mdaga 



„ dact}'lus do. 

 Snxicava arctica 

 rugosa 

 Corbula nucleus 

 Neoera cuspidata 



Necera costellata, Cana- 

 ries & Madeira 

 „ abbreviata, Medi- 

 terranean 

 Lyonsia Norvegica 

 Thracia convoxa, Gibral- 

 tar 

 „ phascolinn 

 Solen cnsis 



„ marginalus 



Solen pellucidus, Gibral- 

 tar 

 Solecurtus ooarctatus Ca- 

 naries it Mediterranean 

 I'siiinniobia Ferroensis 

 Canaries and 

 Mediterranean 

 vpspcrtina 

 „ tellinella 



Tellina crassa 



