Strie on the Mytilus lithophagus. 215 
figure (2). The strie, however, do not form any part of the 
specific-characters, as given either by Linnzus, or by Gmelin, 
and do not therefore seem to us to warrant any other scientific 
distinction being founded on their absence than that of a 
variety, especially as in other particulars all the specimens 
. figured by Mr. Sowerby closely correspond. 
g K 2 VHE | Account 
