Myal (mia)

[NL., IMG:content-1153.png:[blocks in formation] were included in it. By later writers it was succe ively restricted: Retzius, in 1788, limited it to the Unionida, but by subsequent authors it was used for the Mya arenaria and related species, and as such it is universally adopted at the present time. M. arenaria is the common clam or cob of the coasts of the northern hemisphere. M. truncata is a second species, truncated behind.