Page:Transactions of the Linnean Society of London, Volume 12.djvu/390

342 inches in length: the three pair of branchiæ are much ramified, and red.

Length sixteen inches.

Inhabits the Devon coast, but is very rare.

T. gigantea is the largest of the discovered species; it inhabits the soil at the bottom of the sea, and seems to be destitute of any case. We found one specimen in the estuary of Kingsbridge at low water: it discharged an orange-coloured fluid from its mouth in great abundance.

Body long, with numerous orange-coloured articulations, furnished with small peduncles, and at the anterior end with fasciculi of bristles: branchiæ large and red: mouth with a frill-like membrane beneath, and ciliated above. Capillary appendages four or five inches in length.

Length nearly twelve inches.

Diameter near the head half an inch.

The tube (which is described in Testacea Britannica under the name Sabella cirrhata) is very fragile; it is composed of sand and clay, and is lodged in the ground, with half an inch projecting above the surface.

This species is gregarious, and is not uncommon on the southern coast of Devon.

Spec.