The followiug species are common to Madeira, and Scandinavia. 



ACEPH.iXA LAMELLI- 

 BRANCHIATA. 



Saxicava arctica 

 Necera cuspidata 



„ costellata 

 Lj'onsia Norvegiea 

 Thracia phaseolina 

 Solecurtus coarctatiis 

 Venus casina 

 Cardium Non-egicuin 



„ ecliinatum 

 Lucina spinifera 

 Area tetragona 

 Lima Mans 



Pecten pusio 



„ opercularis 



,, maximus 

 Auomia epliippium 



Gasteeopoda peoso- 

 beanchiata. 

 Trocliws zizj-phinus 

 Littor'na neritoides 

 Cerithium reticulatum 



„ adversum 



Scalaria Turtonis 

 Eulima subulata 

 „ nitida 



Chemnitzia rufa 

 Eulimella Scilloe 

 Lamellaria perspicua 

 Murex ei-inaceus 

 Nassa incrassata 

 Mangelia teres 



„ nebula 



„ lineaiis 



Gasteropoda opistho- 



beanchiata. 

 Cylichna cylindracea 

 Ampliispira byalina 

 Philiae aperta 



Being of the Madeira species — 



Acepbala lamellibrauehiata 16 in 54, or 30 per cent. 



Acepbala paUiobrancbiata — ,, 1, „ — ,, 



Pteropoda — 5, — 



Gasteropoda prosobrancbiata 15 „ 90, „ 17 ,, 



Gasteropoda opistljiobrancbiata 3 6, ,, 50 



Total 34 in 156, or 21 per cent, of Madeira species common to 

 Scandinavia. 



Madeira possesses, in common with the British seas — 



Cardium Non'egicum 

 Lucina spinifera 



,, divaricata 

 Diplodonta rotundata 

 Kellia nibra 

 Area tetragona 

 Pectunculus glycimeris 

 A\icula Tarentina 

 Lima bians 

 Pecten maximus 



„ pusio 



,, simUis 



,, opercularis ? 



ACEPHALA LAJIELLI 

 BRANCHIATA. 



Saxicava arctica 

 Venerupis iiiis 

 Neoera cuspidata 



„ costellata 

 Poromya granulata 

 Lyonsia Norvegica 

 Thracia phaseolina 

 Solecurtus candidus 



,, coarctatus 



Tellina incamata 



„ donacina 



„ balaustina 

 Psammobia costulata 

 Enilia castanea 

 Cytheria chione 

 Venus verrucosa 



,, casina 

 Circe minima 

 Cardium echinatum 



„ rusticum 



Pteeopoda. 

 Hyaloea trispinosa 



Gasteropoda proso- 

 branchiata. 

 Cliiton fascicularis 

 CfUyptroea Sinensis 

 Fissurella reticulata 



Emarginula reticulata 

 Haliotis tuberculata 

 Trochus zizj-pbinus 



,, magus 



„ granulatus 



,, striatus 

 Jantbina communis 



,, pallida 



„ exigua 



Phasianella pullus 

 Rissoa creuulata 



Cerithium reticulatum 

 ,, adversum 



Scalaria Turtonis 



Eulima subulata 

 „ nitida 

 „ distorta 



Chemnitzia rufa 



Eulimella Scilloe 



Lamelleria perspicua 



Murex corallinus 



