Note 435 — Chapter XLIX · THE SUBSIDENCES AND DISLOCATIONS OF THE PLATEAUX
Reading edition
These shells were regarded as forms of Unio by the late W. H. Baily; but Dr. Henry Woodward assigned them to Mytilus. See Prof. Hull's Physical Geology and Geography of Ireland, 2nd edit. p. 101. The shells have been more recently dug out by Mr. Clement Reid, who has found them to be the common Mytilus edulis.