. Carnegie Institution of Washington publication. 36 GEOLOGY AND PALEONTOLOGY OF THE WEST INDIES. prominent, and little affected by the individual chambers, running uninter- ruptedly from one end of the test to the other; specimens, when complete, with a short spine at the initial end; aperture radiate, slightly produced. Length up to mm. This species is a common one in the Carribbean and Gulf of Mexico at the present time and in the Pacific tropical regions as well. Its main characteristics are the clear sutural areas between the chambers and the slightly curved elongate test. Although by
. Carnegie Institution of Washington publication. 36 GEOLOGY AND PALEONTOLOGY OF THE WEST INDIES. prominent, and little affected by the individual chambers, running uninter- ruptedly from one end of the test to the other; specimens, when complete, with a short spine at the initial end; aperture radiate, slightly produced. Length up to mm. This species is a common one in the Carribbean and Gulf of Mexico at the present time and in the Pacific tropical regions as well. Its main characteristics are the clear sutural areas between the chambers and the slightly curved elongate test. Although by no means common, well-developed specimens are found occasionally in the material from Bowden. Jones and Parker record Nodosaria raphanistrum Linne from the Bowden marl, and probably this is the same as recorded here as N. vertebralis. In Hill's list of species identified by Bagg no Nodo- saria appears, but Vaginulina legumen (Linne). Possibly this may have been a specimen of N. vertebralis. Jones and Parker also record single specimens referred to Dentalina acicula Lamarck and Vaginulina striata d'Orbigny. Both of these and their N. raphanistrum are given as mm. in length, and it is a question if they are not perhaps all N. vertebralis. In all the material I have examined the only Nodo- sarian specimens I have seen may all be referred to N. vertebralis. Nodosaria species. (Figure 2, a and b.) In the sections 2 specimens of Nodosaria occur, one showing 3, the other 4 chambers. They are small, of fairly uniform diameter, and may represent a small, few-chambered species or may be the young of. some larger species, although if the latter the adults were not observed. FIG. 2.—Longitudinal sections of either young or few-chambered speci- mens of Nodosaria. Figure a, four-chambered specimen from station 7519, drift near top of landslide next north of Los Melones Mountain, Cuba. Fig. b, three-chambered specimen from station 7513, lime- stone outcrop where Palmer Trail joins Ocu
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