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the "Editor's Address," with which the first number of the present series of 'The Zoologist' commenced, allusion was made to the discovery, a few years ago, of the local occurrence in England of Dutrochet's Land Leech, Trochetia subviridis. I had hoped that the remarks then made would have elicited from some correspondent an account of this little-known annelid, and of the circumstances under which it has come to be regarded as indigenous to this country. In this, however, I have been disappointed, and nearly a twelvemonth having elapsed without receipt of any communication (except a brief note from Dr. Murie), it occurs to me to offer the following remarks, in the hope that their perusal may elicit some information on a subject which certainly deserves further investigation, and upon which at present comparatively little is known.