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Show 638 SIR C. ELIOT ON NUDIBRANCHS [June 19, The references in the present paper are made to the 4 Annals & Magazine ' as being more accessible than the other publications, and the three papers are cited as Kelaart, 1. c. I., II., and III. Similar abbreviated references are :- A. <fe H. 1. c. = Alder and Hancock, " Notice of a Collection of Nudibranchiate Mollusca made in India by Walter Elliot, Esq.," in Trans. Zool. Soc. 1864. Farran, 1. c. = Report on the Pearl-Oyster Fisheries of the Gulf of Manaar: Royal Society, 1905. Supplementary Report, xxi., " On the Opisthobranchiate Mollusca," by G. P. Farran. Bergh, Siboga = Siboga-Expeditie. L. Opisthobranchia. R. Bergli. 1905. The three editions of Kelaart's paper do not appear to contain any differences of importance, but the pamphlet opens with a preface which gives little scientific information, but emphasises the fact mentioned from time to time in his descriptions, that he studied Nudibranchs by keeping them " in a glass vivarium," often for considerable periods. He also quotes a long passage from the ‘ English Cyclopaedia ' respecting the structure of Nudibranchs. Besides these papers, Kelaart published a description and figure of Trevelyana ceylonica under the title " Description of a new Ceylonese Nudibranch," in the Ann. & Mag. Nat. Hist. 1858, vol. i. p. 257. My examination of these collections and drawings (supplemented in a few cases by other material) results in notes on 64 species. Of the identifications suggested, I think the following may be regarded as more or less certain :- 1. Hexabranchus marg-hiatus Q. & G. 1832 = Doris gloriosa Kelaart. 2. Chromocloris diardii (Kelaart) = Chr. semperi Bergh, of which Chr. nigrostriata Eliot and Chr. tenuilinearis Farran are varieties. 3. Casella maccarthyi (Kelaart) = C. cincta Bergh. 4. Kentrodoris maculosa (Cuv.) - K. annuligera Bergh = Doris funebris Kelaart. 5. Discodoris concinna (A. <fc H.) = j9/sc. concinniformis Bergh. 6. Archidoris violacea Bergh=Arch. africana Eliot. 7. Thordisa villosa (A. & H.)=Th. maculigera Bergh. 8. Trippa luteola (Kelaart) = Thordisa ? caudata Farran. 9. Trevelyana ceylonica Kelaart = T. rubromaculata Bergh. 10- Bornella digitata Ad. & Reeve = Bornella hancockana Kelaart. 11. Samla bicolor (Kelaart) = Samla annuligera Bergh. 12. Elysia ccerulea Kelaart -Elysia lineolata Bergh. 13. Elysia punctata Kelaart =■ Elysia nigropunctata (Pease). |