40 



4, 



10, 



184, 



13, 



2. 



50 



Only two or three of them are found in North America, viz. : Saxicava 

 arctica, Lucina flexuosa, Lamellaria perspicua ? 

 The Canary species, common to Scandinavia are — 



Acephala lamellibranchiata 25 in 84, or 30 per cent. 



Aoejihala paUiobranclaiata — 



Pteropoda — 



Gasteropoda prosobrancbiata 10 



Gasteropoda opisthobrancbiata... 

 Total, 50 in 302, or 17 per cent. 



The proportion of Canary species found in the British seas is — 



Acephala lamellibrancbiata 49 in 84, or 58 per cent. 



Acephala paUiobranchiata — 



Pteropoda 1 



Gasteropoda prosobrancbiata 41 



Gasteropoda opisthobrancbiata. ... <> 



Cephalopoda — 



Total, 97 in 302, or 32 per cent. 



The Canaries have, in common with the north of Spain, — 



Acephala lamellibrancliiata 30 in 84, or 43 per cent. 



Acephala paUiobranchiata — ,, 4, „ — ,, 



Pteropoda — „ 16, ,, — ,, 



Gasteropoda prosobrancbiata 39 ,,184, „ 21 „ 



Gasteropoda 023isthobranchiata .... 5 ,, 12, ,, 42 ,, 



Cephalopoda — ,, 2, „ — ,, 



Total 80 in 302, or 60 per cent. 



The following species inhabit the Canaries and the Mediterranean, 

 or south coast of Spain and Portugal. 



Psammobia costulata 



,, FeiToensis 



TeUina incarnata 



,, distorta 



,, balaustina 



, , serrata 

 Er\'ilia castanea 



ACEPAHLA LAMELLI- 

 BRANCHIATA. 



Teredo navalis ? 

 Gastrochcenacuneiformis 

 Saxicava arctica 

 Venerupis irus 

 Corbula nucleus 

 Neoera costella 



,, euspidata 

 Pandora obtusa 



,, rostrata 

 Tbracia phaseolina 



,, pubeseens 

 Solecurtus candidus 



,, coarctatus 



Solemya Mediterranea 

 Psammobia vespertina 



Mactra subtruncata 



,, stultorum 

 Lutraria rugosa 

 Cytheria chione 

 ,, Venetian a 



I! 



Venus verrucosa 



,, casina 

 Circe minima 



Astarte incrassata 

 ,, triangularis 



Cardita calyculata 

 ,, corbis? 



Cardium echinatimi 

 ,, rusticum 

 , , papillosum 

 ,, Noivegicum 

 ,, fasciatum 



I.ucina leucoma 

 ,, flexuosa 

 ,, divaricata 

 ,, pecteu 

 ,, spinifera 



Diplodonta rotundata 

 ,, apicalis 



KeUia suborbicularis 



