Pinna bullata, Swainson (Fig. 168), is also a well-known species.
Gloves have been made from the byssal fibers of Pinna mixed with silk.
They are found in an oyster which is something like the pinna, only less.
Pinna, a primary division with its leaflets of a bipinnate or tripinnate leaf.
It inclines the pinna outwards; it is, accordingly, an abductor of the pinna.
It is covered by the auricular muscles, and by the base of the pinna of the ear.
We are supposing, in the description of the muscles which move it, that this pinna has its opening directed outwards.
A marked difference is noted in the size of the pinna of the ear in the various species.
Our figure of Pinna, 16, is from a young specimen: it grows to great size, and spins a very silky byssus.
The lower part of the pinna is the lobule (e), which contains no cartilage.