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Show 650 MR. R. J. LECHMERE GUPPY ON SOME [Nov. 6, the Nodosaria from the Naparima beds of Trinidad I have identified (rightly or not) with N. rugosa, D'Orb. Mr. Joseph Wright, F.G.S., gave it as his opinion that it was a new species of Clavu-lina; but the internal structure, including the hollow pillar, seems to suggest a relationship to Ellipsoidina and Pleurostomella. From the Naparima Microzoic beds, Trinidad. 2. ELLIPSOIDINA SUBNODOSA, n. sp. (Plate XLI. fig. 12.) Elongate, cylindrical, smooth, shining, generally tapering, having 4-12 chambers. Aperture crescentic, with a hooked and projecting lip and an internal hollow pillar. Notwithstanding the resemblance in shape to a Nodosaria, this may generally be distinguished by its more regularly cylindrical shape, the separation between the chambers being less strongly marked than in most Nodosarice. The aperture and interior structure are more distinct marks of difference. The species represents a close approach to Pleurostomella; but the aperture is not situated in a depression as it is in that genus, it is terminal or nearly so. Further, in our new species the segments rarely show a tendency to alternate as they do in Pleurostomella, though it is to be observed that in one or two specimens there is an indication of such a tendency near the apex. The aperture resembles that of Ellipsoidina ellipsoides, as represented by Brady's figure (Quart. Journ. Geol. Soc. vol. xliv. 1888, pi. i. fig. 1). Some specimens of Pleurostomella subnodosa come very close ; see, for instance, the figures given by Burrows, Sherborn, and Bailey (Journ. B. Microsc. Soc. 1890, pi. viii. figs. 27-30). The shape varies from almost strictly cylindrical to subclavate and tapering. The texture is usually very close and fine and rather waxy-shining; but in what appear to be old specimens the surface becomes very finely roughened and seems to put on an arenaceous appearance. In this respect it makes an approach to Stilostomella rugosa (described above), whose aperture is somewhat similar. Ellipsoidina subnodosa is a lengthened-out form of tbe type I have indentified as E. exponens, Brady, M S . (see Brady's remarks, quoted by Jukes-Browne and Harrison, Quart. Journ. Geol. Soc. 1892, p. 196). It is found in the Tertiary Microzoic rocks of Naparima, Trinidad. 3. ELLIPSOIDINA EXPONENS, Brady, MS. (Plate XLI. fig. 13.) A smooth ovoid Foraminifer, having a crescentic aperture with a projecting hooked lip. The aboral end is generally smaller than the other extremity, and shows several successive chambers divided by very slightly sunk sutures. It has the internal structure of Ellipsoidina (Ann. & Mag. Nat. Hist. ser. 4, vol. i. (1868), p. 333, pi. xiii.), and I believe it to be identical with the form so named by H . B. Brady, in Jukes-Browne and Harrison's paper on the Geology of Barbados (quoted under the foregoing description of E. subnodosa). It runs into forms near E. ellipsoides; indeed the three species (E. subnodosa, E. exponens, |