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Show 1900.] MR. F. P. BEDFORD ON MALAYAN ECHINODERMS. 295 References. L. Doederlein, Semon's Zool. Forsch. in Austr. &c Bd. v. Lf. 3, 1896, p. 337. L. Doederlein, Semon's Zool. Forsch. in Austr. & c Bd. v. Lf. 4, 1898. Locality. This is perhaps the commonest Starfish in the district; it lives in 3 to 10 fathoms on mud or shelly gravel, Singapore. I found a specimen infested by two individuals of a species of Thyca, they were fixed close together on the abactinal side. Distribution. Singapore to Australia, extends northwards to the Korean Straits. 1 ... 2 ... 3 ... 4 ... 5 ... 6 ... 7 ... 8 ... 9 ... 10 ... 11 ... 12 ... ale. JJ M a a formol )> » j» )> j» 7* E. 36-5 29 21 14 12-5 56 55 45 41 38 36 27 r. 155 10-5 8 5 45 24 23 17 16 14 14 10 ! No. of marginals. 13 13 12 9 9 16 15 15 15 15 13 13 No. of tubercles : rad. 12 3 5 0 0 24 ? 5 ? 5 10 11 interrad. 1 0 0 0 0 0 9 '{ ? 0 0 1 No. of pigment-spots. ? (dissolved). ? ,, 9 ? „ ? „ 73 21 22+several small. 53 27 21 23 Black pigment is developed on a variable number of the ventrolateral plates ; this completely disappears in alcohol specimens, but is preserved with formol; there seem to be only a few cases in which the underside of starfish is pigmented; as in the case of the black pigment often found lining the body-cavity of Holothurians, its use is not in the least known. 11. ANTHENEA FLAVESCENS. Hosea flavescens (part), J. E. Gray, Synopsis of Starfish, p. 9, 1866. Anthenea flavescens, J. O. E. Perrier, Revision des Stellerides du Mus. de Paris, 1875, p. 276. Locality. A single young specimen which appears to belong to this species was dredged between 5 and 10 fathoms off Tanjong Kling, Malacca. Distribution. Previously recorded from Port Jackson and W. Australia. R. r. Arm-breadth. No. of marginals. 14 7-5 9 9 12. PENTACEROS TURRITUS, Oreaster turritus, Midler # Troschel, System der Asteriden, 1842, |