Notes on the Foraminifera and Ostracoda from the Deep Boring at Richmond

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Abstract
These comprise six specimens of Cristellaria and one Lituola . The latter may be regarded as L. nautiloidea , var., and is small, discoidal, depressed (slightly biconcave), with blunt or rounded edge. It belongs to the Haplophragmium division, is much like the recent H. emaciatum , H. B. Brady, ‘Report on the Foraminifera obtained during the Voyage of the “Challenger,” p. 305, pl. 33. f. 27, and is not far removed from H. nanum , H. B. B., and H. acutidorsatum , Hantken; but the last is involute, instead of evolute, in its growth. The specimen before us may be termed Lituola nautiloidea Lam., var. ( Haplophragmium ) depressa , nov., or, for convenience, L. depressa . It looks so smooth and worn that it is possibly a derived fossil . Pl. XXXIV. fig. 2. Of the Cristellarice , which are all of small size, and some minute, there are the following species or varieties:— (1) Cristellaria rotulata (Lamarck), thin-edged, with convex umbilicus, and raised septal lines; the chambers are rather small, very oblique and subfalcate, about nine in the last whorl (Pl. XXXIV. fig. 9). There is also a very small, ill-grown C. rotulata , with the posterior angle of some of the chambers projecting from the circular edge; not an uncommon condition. (2) Cristellaria cultrata (Montfort), with keel, central boss, thick and raised septa, and about 7 chambers in the last whorl, Pl. XXXIV. fig. 11. (3) A less circular (more elliptical) variety of the last-mentioned form, with 6 chambers visible, the last of

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