NATICA. . 81 
Famity Naticip2&, Swainson. 
Natica, Adanson. 
* Natica sordida, Philippi. 
Habitat—Two large dead specimens at Bogany, Bute, are 
all that I have taken; they were occupied by hermit crabs. 
Mr. Robertson has two live examples from Cumbrae. Mr. 
Norman states that it is found in Kilbrennan Sound. 
British distribution.—In rather deep water on our western, 
northern, and eastern coasts, and all round Ireland; by no 
means a common sheil. 
Foreign localities—Western France (fischer), Spain and 
Portugal (‘A ndrew), and the Mediterranean (both sides) as 
far as “Sicily (Philippi, and others). 
Natica catena, Da Costa. 
Nerita catena, Da Costa ; Cochlea rufescens, Lister; Nerita 
glaucina, Pennant; Natica glaucina, Fleming; Natica 
monilifera, Lamarck, id. Forbes and Hanley. 
Habitat—At low water of spring tides down to one or two 
fathoms in extensive sandy bays; not uncommon in Fintry 
Bay, Cumbrae ; Ettrick and St. Ninian’s Bays, Bute; and 
on most of the Ayrshire coast. 
It is a beautiful subject for the aquarium when newly 
taken, but soon loses its vigour. The characteristic coloured 
markings on this shell generally fade away shortly after the 
death of the animal and exposure to the air. 
British distribution.—On all our coasts wherever suitable 
ground exists, i.e. an extensive sandy flat with a supply of 
bivalve shells. 
Foreign localities —From Norway and Sweden (Lovén, and 
others), throughout western Europe and the Mediterranean 
as far as the Adriatic. 
* Natica Alderi, Forbes. 
Natica nitida, Forbes and Hanley. 
Habitat—In clean sand at lowest spring tides, and in 
sand, sandy mud, and gravel down to all depths; exceed- 
ingly common throughout the district. The size of our 
Clyde shells does not ‘approach that of specimens from more 
southern localities. Montagu and the other earlier writers 
refer this species to the preceding, believing it to be the 
immature state. 
H 
