180 
To the present time the number of species collected at 
Cymmeran amounts to one hundred and eighty-seven ; it is 
quite possible that further researches, especially by dredging, 
will increase the list to two hundred species. Of the species 
dredged alive, which have been only previously found on 
the shore, I may particularise the following: — Saxicava 
rugosa, Venus ovata and fascia ta, Lucina borealis — to the 
specimens of this last species I may remark that although 
I am bound to agree with the opinion of Mr. K. D. Darbi- 
shire that none of them belong to Lucina leucoma, I must 
maintain that it would be taken by any less authority for 
the latter species. It appears to be a permanent and small 
variety of L. borealis ; for out of more than 200 specimens 
taken at Cymmeran, the largest valve measures a little over 
half an inch long and barely half an inch wide. Most of 
the specimens are less, and yet are adult. A normal L. 
borealis from other localities is an inch an a half long and of 
corresponding height. Other species dredged are, Crenella 
marmorata and discors, Nucula, Pectunculus, Pecten maxi- 
mus, opercularis, pusio, varius, Danicus and tigrinus, Anomia 
several species, Pileopsis, Trochus ziziphinus, Nassa reticu- 
lata, Trophon clathratus and muricatus. 
Cyprsea Europsea is an abundant species, and occurs so 
fresh and bright that there is no doubt it lives in the bay, 
especially as the young shells are often found on the sands. 
It is singular that a shell so abundant in most localities 
as Turritella communis should be so rare at Cymmeran; 
even Aporrhais is much more plentiful than Turritella. 
The following twenty-five species are the commonest, 
following in the order given : — 
Patella vulgata, athletica and pellucida, Donax anatinus, 
Littorina 3 species, Pecten varius, pusio, opercularis and 
maximus, Mactra 2 species, Venus striata, Tellina solidula. 
Tapes pullastra, Cardium echinatum and edule, Modiola 
modiolus, Anomia ephippium, Ostrea edulis, Trochus 
