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In the preceding volumes of the 'Journal of the Linnean Society,' Vol. VIII. pp. 172-202, and Vol. IX. pp. 31-38, I have communicated two papers to the Linnean Society, entitled ''Contributions towards a Monograph of the
Aphroditacea.'' In most of the systems of arrangement of the
Annelides, the species of the group
Amphinomacea succeed those of the
Aphroditacea; and I now propose following up those papers by some contributions towards a further knowledge of the species of
Amphinomacea also.
The few species known to Pallas and Gmelin were all arranged in the genera
Aphrodita and
Terebella. Bruguière first separated them from
Aphrodita, and formed a distinct genus to receive them, to which he gave the name
Amphinome. These worms differ much from the
Aphroditacea, by the want of those organs called eltytra, and by the presence of an uninterrupted series of branchiae, which occur on almost all the segments of the body, and which do not alternate, as in these latter, with cirri. Many of them are very long and present a play of fine iridescent colours; most of them are natives of tropical seas. Since the genus
Amphinome was formed by Bruguière, great additions have been made, several new genera and even distinct families have been formed; and as our knowledge of the various species which form this group increases, it will no doubt be found necessary to form several more.
