"Arenicola marina. Entire animal viewed slightly from left side. Note anterior mouth; setae on anterior region; setae and gills on median region; thinner tail region often longer than shown." -Thomson, 1916

Lugworm

"Arenicola marina. Entire animal viewed slightly from left side. Note anterior mouth; setae on anterior…

"A small class of Articulated Animals, mostly included by Linnaeus in his class Verimes. They have a more or less elongated body, which is always composed of numerous rings. The first of these rings assumes, in most of them, the characters of a head, but in some there is no proper head." — Chambers' Encyclopedia, 1875

Sandworm

"A small class of Articulated Animals, mostly included by Linnaeus in his class Verimes. They have a…