Those of Arca (i, k in fig. 9) show this relation to the mouth (a).
Through the central arch the arca and a little cross are seen.
The arca, or family sepulture, can no longer be traced in the church.
Arca, a genus of bivalve molluscs, family Arcad, whose shells are known as ark-shells.
The animal of Arca has the gills placed in an oblique position; the foot is large and ...