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32 BRITISH PALAEOZOIC FOSSILS. [ZOOPHTTA. it is quite certain that it has no relation to the true Eifel species of Goldfuss, which is common in the Devonian limestone of Newtown, Bushel, Torquay, Plymouth, &c. (which see below) which has slender, even, dichotomous branches and broad transverse diaphragms, &c. Position and Locality.—Wenlock limestone of Wenlock, Shropshire, and near Aymestry, Herefordshire. Explanation of Figures.—Plate 1. B. fig. 22. Portion of large group, natural size, from near Aymestry, shewing the form of the deep cups lined with strong lamellae, and the latter becoming obscure on the thick obtuse margin.—Fig. 22 a. Ditto, portion natural size, vertical and horizontal sections, the former shewing the very loose vesicular tissue of the central area and wide lining of the walls with nearly solid sclerenchyme, the latter shewing the primary radiating lamellae extending to the centre, and the secondary ones barely projecting within the wide sclerenchyme lining, through which the lamella may be obscurely discerned. Genus. CYSTIPIIYLLUM (Lonsd.) Gen. Char.—Corallum turbinate, or subcylindrical, outer wall thin, marked with longitudinal lamellar stria; radiating lamella quite obsolete, or only extending a short way from the walls; horizontal and vertical sections shewing a vesicular structure throughout, the obscure rows of cells, curving regularly from the walls under the centre, where they are rather larger than at the circumference, where some species shew short radiating lamella. The obsolete character of the lamella, their frequent absence, and never approaching the centre, dis tinguish this genus from Strephodes, and the absence of a prominent boss in the centre of the cup, and corresponding upward curvature of the rows of cells in the middle of the vertical section, separates it from Clisiophyllum. CYSTIPIIYLLUM BREVILAMELLATUM (M'Coy). PI. 1. B. fig. 19. Ref.—Ann. Nat. Hist. 2nd Series, Vol. YI. p. 276. Sp. Ch.—Corallum elongate, subcylindrical, preserving for several inches a diameter of little more than an inch, slightly tortuous, and with obscure, irregular swellings of intermittent growth; outer wall extremely thin, strongly ribbed, with alternately larger and smaller vertical lamellar sulci, about four larger and three smaller in the space of three lines, at the diameter of one inch (or eighty-four all round), terminal cup with a circular depressed centre, equalling rather less than half the diameter, surrounded by an inclined outer area: horizontal section, outer area composed of forty-two radiating lamellae (corresponding to the stronger external sulci) extending from the walls about one-fifth of the diameter, connected by close numerous transverse vesicular plates, having at the margin an equal number of extremely short lamellae (corresponding with the smaller external ridges), internal area broad, formed of large vesicular plates irregularly arranged: vertical section composed of arched irregular vesicular plates, curving gradually from the walls under the centre, small and numerous at the sides, considerably larger in the middle. It is possible that Mr Lonsdale’s second figure of Cystiphyllum Siluriense, t. 16. bis f. 2, may be a young group of this species; as this figure by its narrow iorm, radiated cups, &c. seems totally distinct from his fig. 1, which is the true type of his species, a new specific name would be required for it in any case. Position and Locality.—Wenlock limestone of Wenlock, Shropshire. Explanation of Figures.—Plate 1. B. fig. 19. Natural size from Wenlock.—Fig. 19 a. Ditto, vertical and horizontal sections, the former shewing the loose vesicular tissue in rows, gradually curving downwards, the cells being much larger in the middle than at the sides, where they correspond to the small lamel- liferous area of the horizontal section.