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Show 1906.] OF SOUTHERN INDIA AND CEYLON. 651 que le scabra et encore plus rude," which suggests a flat rough Platydoris. But the identification may be allowed to stand, for it cannot be disproved, and it would be a pity to change the nomenclature established by Bergh. Neither do I feel sure that Quoy and Gaimard's animal from Vanikoro is really identical with either Cuvier's species or K. annuligera. They say it is " a dos tr&s bombe, de consistance assez molle," which does not agree with Cuvier's account given above. The figure of the under side (I. c. pi. xvi. fig. 4) does not indicate that the anterior margin of the foot is developed into lappets; the tentacles are expressly said to be yellow at the tips and the mantle has a white border. These are no doubt small points, but they may indicate real differences. At least one other Dorid, Platydoris townsendi (Eliot, " Nudibr. from the Indo-Pacific," Journal of Conch., Oct. 1905, p. 253), has the same coloration and superficial appearance as the species here described; and there may be others, for instance Diaidida sandiegensis, which is velvety, yellowish, with dark brown or black rings. From the various descriptions and plates, it would appear that the colour of the living K. maculosa varies from pale yellow-green or grey to white. Kelaart represents hardly any spots on the under side. Alder and Hancock's figure (I. c. pi. xxx. figs. 9,10) is much more elongated than those of other authors. It no doubt represents the animal as fully extended and moving. D iscodoris. Three forms described by Alder and Hancock seem referable to this genus, and the types of all three are preserved at Newcastle, but in indifferent condition. The specimen of D. pardalis corresponds with Alder and Hancock's description of the external characters, but the buccal parts have been removed. The texture is soft. D iscodoris concinna (A. & H.). (Cf. Disc, concinniformis Bergh, Mai. Unt. in Semper's Beisen, xvi. 1, pp. 807-811, and xvii. pp. 900-902. Id., Siboga, pp. 100- 102.) Four specimens labelled in Hancock's writing " Nos. 14, 23, 82, 115. Doris concinna. Madras. Mr. W. Elliot." There is also a note to the effect that the specimens were found partly dried up in 1902. They are now in spirit; but their hard and stiff texture is probably the result of their desiccation. So far as one can judge from such old material, Alder and Hancock's description and plate are quite accurate. The colour of the under side and the foot appears to be variable, being in some specimens pale and spotted, in others darker and livid (cf. the varieties of D. concinniformis Bergh). The shape and elevation |