. Ontario Sessional Papers, 1874, . 38 Victoria. Sessional Papers (No. 8.) A. 1874r the same level in contiguous corallites, and form a series of complete floors. Walls of the thecacomplete and well developed, meeting in the centre of the theca, with a distinct and welldeveloped columella. Costal radii prolonged over the successive exothecal floors. Tabulaerudimentary or absent (?). Fig. 28.—Astrceophyllum gracile (Nicholson and Hinde) ; a, Side view of a fragment, enlarged, shewingthe mural expansions ; 6, Fragment viewed from above and greatly enlarged, showing the calicee. the con-f
. Ontario Sessional Papers, 1874, . 38 Victoria. Sessional Papers (No. 8.) A. 1874r the same level in contiguous corallites, and form a series of complete floors. Walls of the thecacomplete and well developed, meeting in the centre of the theca, with a distinct and welldeveloped columella. Costal radii prolonged over the successive exothecal floors. Tabulaerudimentary or absent (?). Fig. 28.—Astrceophyllum gracile (Nicholson and Hinde) ; a, Side view of a fragment, enlarged, shewingthe mural expansions ; 6, Fragment viewed from above and greatly enlarged, showing the calicee. the con-fluent mural expansions, and the costal radii. There are some points in the structure of the corals here referred to which we cannotactually make out with the materials at present in our hands; and we are therefore uncertainwhether they really constitute a new genus, though we cannot place them under any genusalready described. From Smithia, Edw. and H., the genus Astrceophyllum is distinguished by the posses-sion of a distinct columella, and by the fact that the corallites are united not only by costalradii, but by well developed exothecal floors. From Phillipsastrcea, the present genus is distinguished by not having the corallitesunited laterally along their whole length, and in having the calices definitely circumscribed. From Haimeophijllum (Billings), the genus is separated by
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Keywords: ., bookauthorontariol, bookcentury1800, bookdecade1870, bookyear1874
