HYDROBIA, JEFFREYSIA. 67 
British distribution —Locally abundant throughout our 
coasts wherever the ground is suitable. 
Foreign localities—From Norway throughout Western 
Europe, the Mediterranean and Aigean Seas; also, at 
Madeira (Watson). 
Hypropsia, Hartmann. 
* Hydrobia ulvee, Pennant. 
Turbo ulve, Pennant ; Cingula ulvee, Fleming ; Paludina 
ulvee, Forbes ; Rissoa ulvee, Forbes and Hanley ; Rissoa 
rubra, Macgillwray. 
Habitat—On the muddy shores of the Clyde about Port- 
Glasgow ; also, but scarce, in some small pools near Far- 
land Point, Cumbrae, and in brackish water ditches at the 
head of Loch Long, Loch Gilp, and other similar situations, 
Mr. Norman records a truncated variety from the salt water 
marsh at Brodick Bay, Arran. 
British distribution—In most estuaries, and brackish 
water pools and marshes, being specially abundant on mud 
flats. 
Foreign localities—From Norway (Jeffreys and others) 
to Spain (MW‘Andrew), and throughout the Mediterranean 
and Adriatic Seas. Carpenter records it from California, 
but this and other American localities are probably erroneous. 
FamMILy HETEROPHROSYNIDA, Clark. 
JEFFREYSIA, Alder. 
Jeffreysia diaphana, Alder. 
Rissoa diaphana, Alder; Rissoa glabra, Brown. 
Habitat—At Battery Point, Cumbrae, I obtained a few 
specimens of this shell amongst small seaweeds at low 
water. Mr. Norman records it as common in a pool on the 
Outer Allans in Millport Bay. 
British distribution.—Local, but not uncommon on many 
parts of our coasts from Shetland to the Channel Islands, 
and round the whole of Ireland. 
Foreign Localities—Mr. Jeffreys gives Cherbourg and 
Spezzia, to which I can add nothing. 
Jeffreysia opalina, Jeffreys. 
Rissoa opalina, Jeffreys. 
Habitat—Somewhat common in the Laminarian zone oft 
Shellbole Bay, Cumbrae, and in company with the preced- 
