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Show IS Author dealt with the genera Chromodoris, Casella, Ceratosoma, Sphcerodoris, Miamira, and Orodoris, and gave details with regard to twenty-two species, eight of these being described as new. The new species were in colour as follows, all belonging to the genus Chromodoris :- CHROMODORIS SYKESII.-Dorsal surface bright orange, passing into light yellow towards the edge of the mantle, round which is a double border of reddish brown internally and bright violet externally, with numerous rings of opaque wdiite on the back. C. CAVVE.-Yellowish white with drab blotches. Edges of mantle and foot bordered with light violet. On the back are black spots surrounded by a white line, also orange spots. Foot white, with orange and black spots. C. ANNULATA.-Upper surface white, studded with yellow spots Round the margin a border of deep purple. C. SPLENDENS.-Colour varying, being produced by thick collections of purple and white dots, in different proportions in different places. A vivid orange border round the body. C. VICINA.-Mantle and foot bordered with light violet. Middle of the back clrab-brown with violet spots. Edge of mantle and foot spotted with yellow. C. NIGROSTRIATA.-Violet-blue grey, with blotches of light primrose-yellow. On the back and sides of foot are distinct curved black lines. C. INCONSPICUA.-White with opaque white spots and a few brown ones in the middle of the back. Akin to C. albonotata B. C. FLAVA.-Bright lemon-yellow, with a blood-red border round he mantle-edge. A communication from Mr. ROBERT T. LEIPER contained a detailed account of the Turbellarian Avagina incola, which had been described as new to science at the Meeting of the British Association at Belfast in 1902. This Turbellarian had been found in the accessory canal of several specimens of the Common Heart-Urchin, Echinocardium cordalum, collected from Karnes Bay, Cumbrae, N.B., in the summer of that year. As well as forming the type of a new genus and species, it was of interest as being the only recorded example of distinct parasitism among the Acoelous Turbellaria. A note on the classification of the Proporida; was also included in the communication, in which it was proposed by the Author to divide this family into two subfamilies :' (1) the Proporina?, to include those genera with a common genital atrium, viz. Proporus, Monoporus, and Bbhmigia; and (2) the Avaginina?, to comprise those genera with male accessoria only, viz. Haplodiscus find Avagina. |