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Show 106 ZOOLOGICAL C O L L E C T I O N S M A D E D U R I N G [Jan. 4, LABIOPORA MOSELEYI, sp. n. (Plate VI. fig. 11.) An upright well-branched frond, rising from a somewhat spreading base and thick stem ; branches lying almost entirely in one plane, all somewhat flattened from front to back except the terminal ones, which are cylindrical and taper slightly to their generally somewhat blunt points ; anastomosis between branches frequent. Colour of stem, base, and anterior and posterior aspects of main branches pale vermilion in the dry state, the same parts of the terminal branches and the lateral portions of the main ones deep vermilion. An anterior clearly distinguishable from a posterior surface, by the development on it of numerous tubercles, chiefly in the terminal branches, which are very slightly indicated on the latter. Surface minutely reticulate, covered (slightly on the anterior face of chief branches and stem, thickly on lateral faces of main branches and on anterior and lateral faces of terminal branches) with small rounded tubercles, varying in height up to about "4 millim., the largest generally pierced by dactylopores. Dactylopores differing little in size, i. e. long diameter from "1 to "14 millim. ; either round or oval; of two kiuds, either (i) placed in the general surface of the corallum, or (ii) in the side or near the apex of a tubercle, forming a slit in its side; the tubercle in this case has a horseshoe-shaped outline, but with a very thick convex side, as the dactylopore never occupies more than half the apex of the tubercle, and is generally dominated by the superior height of the apex of the tubercle ; no styles visible. Gas-tropores found accompanying dactylopores, also to some extent alone on interior surface of the larger branches; round, provided with deeply-set styles resembling camel's-hair brushes, diameter from •32 to "35 millim., each generally accompanied by oue tubercular dactylopore and one to three surface ones. Male gonangium spherical, closely packed with oval or globular refringent pale reddish-yellow cells with transparent contents. Ccenosarcal canal-system closely reticulate ; meshes generally about same diameter as the canals which form them, viz. "035 to 07 millim. Examined. Dry, and by decalcification and subsequent mounting of pieces in glycerine. Hab. Port Rosario, S.W. Chili (on the north side of chief island of Madre-de-Dios archipelago), 2-10 fathoms, on a piece of calcareous rock. Obs. This Coral is of great interest as being closely allied to the preceding species, the only one known hitherto of the genus Labiopora, previously known only by a single dry specimen. It also is represented by a single dry specimen, but of greater size, measuring 9"5 centims. in extreme (present) height and 13"4 centims. in extreme present breadth; the contrast between the pale-red colour of the stem and the deep colour of the branches gives it a fine appearance. The gonangia were not found abundantly, perhaps owing to the early time (March), at which it was taken. It differs from L. antarctica in having an anterior distinguished from a posterior surface, in the small and uniform size of all the dactylopores, and in their being," when present on the tubercles, mere excavations in their sides ; for the |