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Show 1900.] MR. F. P. BEDFORD ON MALAYAN ECHINODERMS. 289 The following is a list of the species represented in the collection :- 1. Archaster typicus M . & T. 2. Craspidaster glauconotus, sp. nov. 3. Astropecten javanicus Ltk., var. malaccanus nov. 4. Astropecten pleiacanthus, sp. nov. 5. Luiclia longispina Sladen. 6. Luiclia penangensis de Lor. 7. Luidia maculata M . «fe T. 8. Iconaster longimanus Mob. 9. Goniodiscus articulatus de Lor. 10. Stellaster incei Gray. 11. Anthenea flavescens Perrier. 12. Pentaceros turritus M . & T. 13. Culcita novce-guinece, var. arenosa Perrier. 14. Palmipes rosaceus M . & T. 15. Retaster cribrostis v. Mart. 16. Patiria, sp. 17. Asterina, sp. The total absence of Linckiadce from the collection seems worthy of remark. 1. ARCHASTER TYPICUS. Archaster typicus, Muller & Troschel, Archiv f. Naturg. 1840, p. 323. References. Muller & Troschel, System der Asteriden, 1842, p. 65, Taf. 5. fig. 2. v. Martens, Archiv f. Naturg. 1866, p. 83. C. Ph. Sluiter, Natuurk. Tijd. v. Ned. Ind. xlviii. 1889, p. 309. P. de Loriol, Rev. Suisse de Zool. t. i. 1893, p. 378. L. Cuenot, Archives de Biologie, xi. 1891, p. 335. H. Ludwig, Bronn's Thier-Reich, Bd. ii. Abth. 3, Asteroidea, 1899. R = 5S-7-0xr. Locality Sf Habitat. This species was very abundant on a sand-flat just exposed at low tide on Po Senang, Singapore; I did not meet with any examples elsewhere ; its habitat appears to be identical on the islets of the Java Sea (cf. Sluiter). Distribution. Extends from theNicobars andAndamans through the Mergui Archipelago, Malay Archipelago, and N . Australia, as far as the Fiji and Tonga Is. It seems doubtful whether it occurs in Mauritius. Out of five specimens brought back the superomarginals varied in number from 45 to 50 on each side of interbrachial arch (v. Martens gives 40-45, while Muller & Troschel give 36). Thei-e were no traces of supermarginal spines. In one specimen at the base of one of the arms there is a constriction somewhat similar to that which occurs in Linckia before schizogony of the arm takes place; in the present case the |