THRACIA., 39 
Famity ANATINIDE, D’Orbiginy. 
TuHractra, Leach. 
Thracia preetenuis, Pulteney. 
Mya preetenuis, Pulteney; Mya (and Anatina) pretenuis, 
Turton; Amphidesma preetenue, Fleming; Ligula (and 
Mya) preetenuis, Montagu ; Cochlodesma (of Couthouy) 
preetenue, Forbes and Hanley. 
Habitat—In muddy sand and gravel, in 10 to 15 fathoms ; 
a scarce shell. I have taken one or two living examples at 
Ardmaleish and Bogany Points in Bute, and dead shells on the 
Tan Spit in Cumbrae ; single valves occur sparingly through- 
out the district. Mr. Norman states that he has taken this 
species in Lamlash Bay and off Cumbrae, but very sparingly, 
and that it is more frequent off Largs. Mr. Robertson records 
it as moderately common at Cumbrae. 
British distribution—Searce, but generally distributed 
throughout our seas. 
Foreign localities.—< Iceland, Farée Islands, Scandinavia, 
north of France, Adriatic, Naples, and Sicily” (Jeff. Brit. 
Con.); also Algeria (Weinkauff). 
* Thracia papyracea, Pol. 
lg » 
Tellina papyracea, Poli ; Amphidesma phaseolina, Lamarck ; 
Mya declivis, Turton; Thracia phaseolina, Forbes and 
Hanley. Variety villosiuscula = Anatina villosiuscula, 
Macgillivray. 
Habitat—In sand and nullipore, in about 6 to 10 fathoms ; 
rather scarce in a living state. I have taken it alive on 
Bogany Point and off Craigmore and Kerrycroy, Bute; also 
on the Tan Spit, Cumbrae. The variety villosiuscula is the 
prevalent form in this district, but I have not kept it sepa- 
rate from the type in my notes. Mr. Norman reports this 
variety as being fine and frequent in Lamlash Bay. 
British distribution—Although apparently scarce in the 
Clyde district, it is reported as rather common throughout 
all our seas in sandy bays, from low water to a few fathoms ; 
the variety being equally diffused, and inhabiting a deeper 
zone. 
Foreign localities.—Iceland (Steenstrup), Norway (Lovén, 
Sars,and Jeffreys), Spain, Portugal,and Canaries (Al Andrew), 
Mediterranean (aires and others). 
