2 THE MOLLUSCA OF THE FIRTH OF CLYDE. 
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taken it in Lamlash Bay, but whether in a living state or 
not I do not know. 
British distribution.—Throughout our coasts from Shet- 
land to the Channel Islands. 
Foreign localities—None on record, so far as I know. 
* Odostomia albella, Lovén. 
Turbonilla albella, Lovén ; Odostomia rissoides var. albella, 
Forbes and Hanley. 
Habitat.—Under stones from half tide down to low 
water, and occasionally amongst the roots of Laminariz. 
It is not uncommon in Cumbrae, especially at Foulport and 
Farland Point, but appears to be somewhat local. Mr. 
Norman has taken it at Clachland Point, Arran. 
British distribution. — Locally distributed from the 
Channel Islands to Shetland ; not uncommon. 
Foreign localities—Norway (Sars and others), Sweden 
and Denmark (Malm), Western France (acé and others), 
Mediterranean and Adriatic (Martens and others). 
Odostomia rissoides, Hanley. 
Odostomia scalaris, Macgillivray ; Rissoa glabra, Brown. 
Habitat—With the preceding species at Foulport, Cum- 
brae, and not uncommon on most stony shores in the 
district. 
British distribution—On all our coasts, from half tide 
down to afew fathoms. There are several varieties, none 
of which I can venture to indicate as inhabiting the Firth 
of Clyde. 
Foreign localities—Norway and Sweden (Loven, Jeffreys, 
and others), French coast (Zaslé and others), Spain 
(M‘ Andrew), Spezzia (Jeffreys), Algiers (Weinkauff). 
* Odostomia pallida, Montagu. 
Turbo pallidus, Montagu ; Odostomia unidentata, Fleming ; 
Odostomia eulimoides, Forbes and Hanley. 
Habitat—Rather common on scallop beds in 8 to 20 
fathoms, generally on the ears of Pecten maximus and 
opercularis, and never on ground where these pectens are 
not found. I have taken it off Ascog, in Bute; on 
Tan Spit, and off Shellbole Bay, Cumbrae; and off Moll 
