Being — 



Acephala lamellibrancbiata C8 in 124:, or 55 per cent. 



Acepliala paUiobraucliiata "2 „ 5, „ 40 ,, 



Pteropocla — ,, 3, — 



Gasteropoda prosobranchiata 55 ,, 136, ,, 40 „ 



Gasteropoda opistliobraucbiata 12 „ 21, „ 57 „ 



Total of Testaceous MoUusca, common to the west of Scandinavia and 

 the north of Spain, 137 in 289, or 47 per cent, of the foinuer. 



All the species, enumerated in the list immediately preceding, in- 

 habit the Mediterranean, or to the southward of Cape St. Vincent, 

 except the following : — 



Acephala lamelli- 

 beanchiata. 



Donax anatinus ? 

 Pecten tigrinus? 



Acephala pallio- 

 beanchiata. 



Crania anomala 



Gasteropoda peoso- 

 beanchiata. 

 Chiton eiuereus 

 ,, assellus 

 Trochus tumidus 



,, cinerarius 

 Littoiina rudis 

 „ littoralisj 

 „ saxatUis 



Littorina tenebrosa 

 Rissoa Ulvae 



,, striatula 



„ vitrea 

 Lacuna puteolus 

 Natica monilifera 

 Velutina loe^dgata 

 Pm"pura lapillus 



Consequently, there are of Scandinavian species extending into the 



Mediterranean region — 



Acephala lamellibranchiata 06 in 124, or 53 per cent. 



Acephala palliobranchiata 1 „ 3, ,, 20 „ 



Pteropoda — 3, — 



Gasteropoda prosobranchiata 40 „ 136, „ 30 „ 



Gasteropoda oisisthobranchiata 12 „ 21, ,, 57 ,, 



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

 the Mediterranean region, 1 19 in 289, or 41 per cent. 



The Scandinavian species obtained in the Canary Islands are 



Acephala luielli- 

 branchuta. 

 Teredo navaUs 

 Saxicava arctica 

 CorbiUa nucleus 

 Neojra cuspidata 

 ,, costellata 

 Thraeia phascolina 

 Solecurtus coarctatus 

 Psammobia vespertina 

 ,, ferroensis 



Donax anatinus 

 Mactra subtruncata ? 

 Venus casina 

 Cardium echinatum 



Cardium fasciatum 



„ Norvegicum 



,, edule 

 Lucina flexuosa 



,, spmifera 

 Kellia suborbieularis 

 Crenella marmorata 

 Area tetragona 

 Lima hians 



„ suborbieularis 

 Pecten opercularis 



,, pusio 

 Gasteropoda proso- 

 branchiata. 

 Cliilon fascieuluris 



Emargiuula reticulata 

 Trochus zizyphmus 

 Littorina neritoides 

 Eissoa parva 



„ costata 



„ textilis? 

 Cerithrum adversuni 



,, roticulatum 



Eulinia nitida 

 Eulima distorta 

 Cheninitzia rufa 

 Odostoniia conoidea 

 Eulimella Scillaj 

 Nassa reticiUnta 



