OF NORTHUMBERLAND AND DURHAM. 169 
obtained from the deep-water fishing boats by Mr. King. They 
were found attached to the byssus of a Modiola valgaris brought 
up from a depth of forty fathoms, twenty-five miles from the 
coast of Northumberland. As this is the third time that this 
species, a well-known inhabitant of the north seas, has been 
found between the Tyne and the Frith of Forth, there can be 
little doubt that it inhabits the deep water of our coast. 
Orper. LAMELLIBRANCHIATA, Blainville. 
Sus-OrpEer. Monomyarra, Lamarck. 
Famity. Ostreipa, Guiding. 
76. ANOMIA, Linneus. 
1. A. epHrpprum, Linn. 
Anomia ephippium, Mont. Test. Brit. 155. 
On most parts of the coast, but not common. 
The Anomia electrica of Brown, found at Cullercoats, is most 
likely a variety of this species. 
2. A. squamuna, Linn. 
Anomia squamula, Mont. Test. Brit. 156. 
On oysters, pectens, and other shells, frequent. 
3. A. PATELLIFORMIS, Linn. 
Anomia undulata, Mont. Test. Brit. 157, t. 4, f 6. 
On the under sides of rocks and stones between tide-marks, 
frequent. 
The Ostrea striata of British authors, first noticed by Lister 
as common upon the sands at the mouth of the Tees, we take to 
be this species, the upper valve of which is frequently thrown up 
on our shores, and has the inside green, with a white muscular 
impression as described by Lister. The under valve (which 
would have shewn it to be an Anomia) is very thin and fragile, 
and, in such cases, always absent. 
4, A. acuLEata, Mill. 
Anomia aculeata, Mont. Test. Brit. 157, t. 4, f. 5. 
On sea weeds between tide-marks, frequent. 
5. A. cyninprica, Gmel. 
Anomia cymbiformis, Mont. Test. Brit. Supp. 64. 
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