73 
Rissoa arctica 
^ Hydrobia minuta 
Skenea planorbis 
Trochus occidentalis 
Margarita helicina 
— undulata 
— cinerea 
Scissurella crispata 
Puncfcur ella noachina 
Acmæa testudinalis 
Lepeta cæca 
Pilidium rubellum 
Chiton marmoreus 
— albus 
— ruber 
Cylichna alba 
Amphisphyra hyalina 
Philina qvadrata 
Limacina arctica 
Spirialis balea 
Sstf- —--- 
Dentalium abyssorum 
jLacuna puteolus 
Rissoa arctica 
Hydrobia minuta 
Skenea plan orbis 
Trochus occidentalis 
Margarita helicina 
— undulata 
— cinerea 
— plicata 
Scissurella crispata 
j — angulata 
Ipuncturella noachina 
jCapulacmæa radiata 
IAcmæa testudinalis 
I 
Lepeta cæca 
'Pilidium rubellum 
Chiton marmoreus 
I — albus 
: — alveolus ! 
' I 
‘ — ruber | 
— Nagelfar 
Cylichna alba 
I 
— propmqva j 
'Amphisphyra hyalina^ 
I — globosa I 
Scaphander librarius 
Akera bullata 
Philine qvadrata 
— finmarchica 
I___ 
Limacina arctica 
Spirialis balea 
— Flemingii 
Dentalium abyssorum 
Siphonodentalium vi- 
treum 
Margarita helicina 
Margarita cinerea 
Limacina arctica 
