Page:Transactions of the Linnean Society of London, Volume 12.djvu/395

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five British Species of Terebella.
343

Spec. 3.Terebella nebulosa.
Tab. XII. Fig. 2.

T. with its body spotted with white, having thirteen dorsal plates.

Body long, orange-red, spotted all over with white. Anterior extremity very tumid, defended by the dorsal plates: anterior peduncles very small, with the fasciculi pointed. The other peduncles and fasciculi are broad. The posterior end is abruptly smaller than the other, as if it had been lost by accident, and afterwards reproduced. The capillary tentacula are numerous, and of a pale orange-colour spotted with white. Branchiæ red with white spots.

Length six or seven inches.

Diameter of the largest part half an inch.

Inhabits the southern coast of Devon rarely, being taken only by deep dredging. Its case is composed of slimy matter, covered with gravel and broken shells.

Spec. 4.Terebella Constrictor.
Tab. XIII. Fig. 1.

T. with twelve broad plates on the back: capillary appendages pale.

Body orange-red, with about one hundred and twenty approximate articulations furnished with small fasciculi; those behind the dorsal plates are divided down the middle by a sulcus: mouth with an expanded lower lip, surrounded with capillary appendages longer than the body.

Length three or four inches.

Inhabits the coast of Devon, and is rare.

The very closely-connected articulations discriminate this species from any of the others. Its case or tube is unknown.

Spec.