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Show Mil. \\ . F. LANCHESTER OX THE [Dec. 2, Loc. Patani. Five specimens from Natica, with anemones. The flagella of the antenna3 are fringed along their whole length with longish hairs; this point is not noticed hy Henderson in his description or figure. 14. D iogenes r ec tim an us Miers. Diogenes rectimanus Miers, ‘ Alert ' Crust, p. 262, pi. xxvii. fig. C (1884). Loc. ------ ? One small specimen from Murex, and several, very small, from shells of Jiissoa, Gibbula, and Neritina. The largest specimen has the carapace only 4£ mm. long, and large ehelipede only 9 mm. long: to their small size it is probably due that the spines on the lower border of the hand of the larger clielipede are scarcely prominent, while the arrangement <>f the granules on this leg is more obscure. 15. D iogenes se n e x Heller. Diogenes senex Heller, ‘ Novara' Reise, Crust, p. 85. pi. vii. fig. 3 (1865). Loc. Pulau Bidan, Penang. A female, with ova, from Murex. I cannot discover the ophthalmic process in this specimen, but it is probably safer to consider it as having been accidentally broken off, for otherwise the resemblance of the specimen to Heller's description and figure is complete ; the hands only of the larger ehelipede and the ambulatory legs would seem to be even more densely hairy than as shown in his figure. 16. D iogenes d e s ip ien s , sp. nov. (Plate XXXIV. figs. 1, 1 a.) Loc. Pulau Bidan, Penang. A male, from Gancellaria. This species is characterized at first sight by its extremely short, broad ophthalmic process, and the great hairiness of the legs and under surface of the body. The anterior portion of the carapace just behind the front (which is raised into a smooth distinct ridge) is covered with large, coarse, somewhat scattered granules over a small area; behind this area is a deep, transversely-placed groove, convex towards the front and not continued towards the lateral margins, behind which groove the carapace is smooth, except for the very narrow portion enclosed within the groove, which is coarsely punctate. The sides of this part of the carapace are thickly hairy, and rough granulate (almost rugose posteriorly) beneath the hairs; the branchial regions are somewhat swollen, smooth, with a few longish hairs; the V shaped suture of the gastric region is distinct. The rostrum is bluntly pointed, triangular, with a broad base, and reaches as forward as the lateral teeth ; between these and the rostrum the front is concave. The ophthalmic scales are longer than broad, and rounded distally where they carry some long hairs; the ophthalmic process is short and broad, reaching barely halfway along the scales, with its anterior edge microscopically denticulate. Ocular peduncles |