CAPULUS, CYCLOSTREMA. 53 
FAMILY CAPULIDE, Fleming. 
Caputus, De Montfort. 
Capulus Hungaricus, Linndé. 
Patella Ungarica, Linné; Patella pileus, &e., Da Costa; 
Pileopsis Ungarica, Lamarck. 
Habitat—In 3 to 12 fathoms on large stones and shells, 
especially on the shell of Mytilus modiolus, with whose coal- 
black epidermis the pure white of the present species 
strongly contrasts. Pink or rose-coloured specimens are 
sometimes met with. The best locality I know of for this 
species is the north side of Kamesburgh Bay, Bute, in 
about 3 or 4 fathoms water. It is also not scarce on 
Bogany Point and down the east side of Bute. It occurs 
off Little Cumbrae, but not plentifully. Ma. Norman reports 
it scarce and small at Lamlash. 
British distribution.—Throughout all our seas not un- 
common, but probably nowhere abundant. It is taken 
very large and somewhat plentifully on the southern coast 
of Devon. 
Foreign localities—Iceland (Wallich), Norway (Lovén, 
and others), Spain and Portugal W‘Andrew), Mediterranean, 
Adriatic, and Aivean (Forbes, and others). 
Famity Trocaipaé, D’Orbigny. 
CycLostreMA, Mariyat. 
Cyclostrema nitens, Philippi. 
Delphinula nitens, Philippi ; Margarita pusilla, Jeffreys ; 
Trochus pusillus, Forbes and Hanley. 
Habitat—In sand and nullipore in 10 to 80 fathoms ; 
rather common, but generally dead. In a living state I 
have taken a few specimens on the Tan Spit and off 
Silvercraigs, Loch Fyne. “Common in Lamlash Bay” 
(Norman). 
British distribution —Throughout our southern, western, 
and northern seas, and round the whole of Ireland. It has not, 
so far as I know, been noticed on the east coast farther 
south than Aberdeenshire. 
Foreign localities—Norway (Sars), French Atlantic 
coast (De Folin), Mediterranean (M‘Andrew), Mgean 
(Spratt). 
