This beautiful species is perhaps the largest of the whole tribe as yet discovered. It is found in various parts of the coast of Jamaica, adhering to, or rather embedded in, the rocks. Its irritability is exceedingly great, and on being approached it instantly retreats into its elastic tube; this tube is of a leathery consistence, unlike that of the Serpula. Specimens of this elegant species can only be obtained by breaking off such parts of the stone as contain them. These, being put into tubs of sea-water, may be kept for months in perfect health. That part of the body which is so beautifully spread out like an umbrella, consists of the branchiæ or organs of breathing; these are of a yellowish colour, beautifully marked with pink. The Amphitrite, although perhaps it never entirely leaves its tube, is not attached to it, and frequently draws out nearly the whole of its body.
Amphitrite magnifica.
ORDER ANNULATA ANTENNATA,
(Annulose Animals possessing Antennæ.)
The Sand-Worm of the Fishermen,
([Arenicola piscatorium].)
This Worm forms its nest in the sand on the sea-shore, and is much sought after by fishermen as bait for fishes. It is found in all the European seas. There appears to be but one species, but that is met with in great abundance.