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Show 282 MR. F. P. BEDFORD ON MALAYAN ECHINODERMS. [Mar. 20, report, to differ considerably in depth, and the area in question appears to represent the shallow-water margin of the distributional area of E. acutus which overlaps the centre of distribution of E. esculentus. . M Two of the specimens collected approach very close to "typical S. aiexandri in the more uniform character of their tuberculation, their deeper sutural furrowings, and their general facies ; and t seems to me that the two forms represent extremes of a continuous series, the "norm "of which differs in different localities (cf. Loven). Dr. Loven places this species in the genus Temnopleurus, but I cannot see sufficient differences to warrant its generic separation from the other Salmacis; the bare median spaces containing the sutural pits, and referred to by Dr. Doederlein, are very obvious in the living animal. The colour of the spines is for the most part dark violet, with the base and tip often cream-coloured (cf. Duncau & Sladen). )iaiu. 50 59 61 Height. 31 35 35 Oalyx. 75 8-0 10-5 Measurements Peristome. 13-5 14-5 13-5 Percen H. 62-0 59-3 57-4 tage s values: O. 15-0 13-6 17-2 D=100 P. 27-0 24-6 22-1 7. SALMACIS GLOBATOR Bell (? L. Ag.). (Plate XXII. figs. 4 a, b.) Salmacis globator, F. J. Bell, Proc. Zool. Soc. 1880, p. 431 (S. globator ft). ? S. sulcatus, Shaden, Journ. Linn. Soc, Zool. xiv. p. 439, 1879. References. F. J. Bell, Proc. Linn. Soc. N. S. W . ix. 1885. S. Loven, Bih. K. Svensk. Vet.-Ak. Handl. Bd. 13, Afd. 4, No. 5, 1887. Localitg. Singapore. Habitat. The test of this species together with those of S. sulcata are frequently found washed ashore on the east side of (Singapore Island ; unfortunately when collecting I did not recognize that the two species were distinct, so that I do not know in what proportions they occur; they live in considerable abundance from between tide-marks up to about 10 fathoms on a muddy bottom. The synonymy of this, as indeed of all the species of Salmacis, is in a state of the greatest confusion. Prof. Bell (loc. cit. 1880) described it as Salmacis globator (ft) ; some years later (loc. cit. 1885) he expressed the opinion that it was identical with Louis Agassiz's S. globator, and he then renamed Alex. Agassiz's S. globator, Salmacis aiexandri. Dr. Loven does not admit that S. globator (3) Bell is Louis Agassiz's species, but, on the other hand, unites it with S. rarispina of the latter author. It is quite impossible from the meagre description in Agassiz and Desor's ' Catalogue Raisonne' to arrive at any conclusion as to the species they intended ; it seems better therefore, for the sake of |