MARINE MOLLUSCS. 
263 
Total of the Molluscs of South Devon here enu¬ 
merated 304. Total of those species peculiar to the 
South Devon shores, or in some few cases common 
to the shores of Devon and Cornwall, 55. Those 
found in Cornwall and not in Devon are too few to 
deserve separate notice. 
The following sea shells not belonging in strict 
propriety to the foregoing lists, may here however 
be noticed. 
Nautilus spirula, “ Crozier nautilus .” Teign- 
mouth. (Turton.) Dentalium trachea. Milton. 
(Montagu.) DentaliumGadus. (Turton&Kingston.) 
Dentalium glabrum. (Turton and Kingston.) Den¬ 
talium imperforatum. Falmouth and South Devon. 
(Turton and Kingston.) * Dentalium politum. 
Torbay. (Turton.) * Dentalium labiatum. Torbay. 
(Turton.) * Dentalium striatulum. Devon and 
Cornwall. (Turton.) Dentalium dentalis. Not un¬ 
common. Dentalium entalis. Plymouth Sound. 
(Mr. Colley.) 
Serpula spirorbis, (abundant) spirillum, minuta, 
granulata, heterostropha, carinata, and vitrea, are 
all Devon shells, as recorded by Turton and 
Montagu. Serpula vermicularis, I have found 
fixed to shells, and on Eschara retiformis. Serpula 
triquetra, on Eschara retiformis, &c. (J. C. B.) 
Serpula complexa, Serpula tubularia on Eschara 
retiformis. * Serpula rugosa, Teignmouth, (Turton) 
and * Serpula arundo, are likewise found on our 
shores. 
As in the case of the fishes of South Devon so it 
is with our marine Molluscs, we rank species in our 
list which by some are considered to belong in 
strict propriety to foreign climes, and by others are 
thought to have the extremes of their geographic 
range actually on our shores. There can be no 
question that the Devon and Cornish coasts are 
actually the extreme limit of several kinds of mol- 
