360 Rev. T. Hiiicks's Catalogue of Zoophytes of a quadrilateral figure, open in front, whose length consider-ably exceeds its breadth ; the sexual organs are of a yellowish-brown hue, passing into dark brown at the posterior part, and have a longitudinal septum in the middle. [To be continued.] XL. — A Catalogue of the Zoophytes of South Devon and South Cornwall. By the Rev. Thomas Hincks, B.A. [Concluded from vol. ix. p. 475.] Appendix. Classification. — In the Introduction to this Catalogue I have adopted Prof. Huxley's Systematic Arrangement of the Hydro-zoa. I am now convinced, however, that the groups to which he has assigned respectively the names Hydridce, Corynidcs, and SertulariadcB are not entitled to ordinal rank, but should merely be regarded as families. I therefore propose to classify the Hydroid polypes, with Johnston, under one order, Hydroida, and to distribute them into the following families: — 1. Tubula-riadce (embracing both the Tubulariadde and the Corynidai of Johnston) ; 2. Campanulariadce ; 3. SertulariadcB ; 4. Hydridce, Addenda. Class HYDROZOA. Order HYDROIDA. Fam. Tubulariadae. EuDENDRiUM, Ehrenbcrg. 1. E. rameum, Pallas. "On Pinna ingens, south of the Deadman Point" (Couch), 2. E. capillar e, Alder. Additional habitat : near Polperro, Cornwall. The specimens received from this locality hear female capsules, which have not hitherto been noticed. They are ranged round the lower portion of the body of the polype, and bear a general resemblance to those of other species of Eudendrium. Mr. Alder, in the Supplement to his Durham and Northum-berland Catalogue, refers this species to the genus Dicoryne. At present I feel doubtful as to its true position. There is much difficulty in classifying the Tubulariadse; and the existing genera will require thorough revision.
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