Catalogue of lithophytes or stony corals in the collection of the British Museum . Nicella mauritiana. CALyPTROPHORAD^E. 41 longer than the diameter of the stem, ascending, truncated at thetip, placed rather irregularly, subalternate (rarely subopposite) oneach side of the stem and branches ; axis pale greyish dichotoma, Gray, P. Z. S. 1859, p. Mauritius. t Scales larger. Fam. 17. CALYPTROPHORADtE. Coral cylindrical, furcately branched; the branches elongate, sub-simple. The axis horny (?) near the apex, cylindrical, tapering. Barkthin, entirely formed of a single ser
Catalogue of lithophytes or stony corals in the collection of the British Museum . Nicella mauritiana. CALyPTROPHORAD^E. 41 longer than the diameter of the stem, ascending, truncated at thetip, placed rather irregularly, subalternate (rarely subopposite) oneach side of the stem and branches ; axis pale greyish dichotoma, Gray, P. Z. S. 1859, p. Mauritius. t Scales larger. Fam. 17. CALYPTROPHORADtE. Coral cylindrical, furcately branched; the branches elongate, sub-simple. The axis horny (?) near the apex, cylindrical, tapering. Barkthin, entirely formed of a single series of thin lines and calcareousscales, with regular equidistant whorls of cells. Cells with a circularmouth having a raised edge, placed close together and forming araised ring round the coral. Each cell is furnished with twoobconic pellucid cells placed one on the other; the lower cellapparently articulated to the axis of the coral, very narrow near Fio-. (ahiptrophora Japan icu. 42 CALYPTKOPHORADJE. the mouth of the cell and wide at the other end; the lower sur-face of the outer aperture is furnished with two elongated horn-like processes. To the centre of this basal cone is articulated oraffixed a similar pellucid horn-coloured cone, or rather obconic vase,which is furnished with a slightly keeled ridge at its widest part,and then contracts, as if it had a shorter conical lid with an aper-ture in the middle of this lid-like contracted part for the emissionof the polypes. The two cones are as it were articulated to thestem; and the lower cone stands at right angles with regard to it,and the upper at right angles with regard to the lower one, so thatthe aperture of the upper one is vertical. 65. CALYPTEOPHORA. Characters of the , Gray, P. Z. S. 1866, p. 25. 141. Calyptrophora japonica. Calyptrophora japonica, Gray, P. Z. S. 1866, p. 25. f. Japan. The cones are only preserved on the inner side of the bra
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