. Bulletin of the British Museum (Natural History), Geology. FORAMINIFERA OF THE TOGOPI FORMATION 101 Caribeanella ogiensis (Matsunaga) Fig. 64; PL 7, fig. 16 1954 Oinomikadoina ogiensis Matsunaga : 163, text-figs 1-3. 1955 Oinomikadoina ogiensis Matsunaga; Takayanagi: pi. 2, figs 20a, b. 1963 Oinomikadoina ogiensis Matsunaga; Matsunaga : pi. 50, figs 5a-c. Material. 20 specimens. NB 9448, 9449, 9450, 9452. Variation. Maximum diameter 0-49-0-70 mm, thickness 0-15-0-27 mm. Number of chambers in final whorl Fig. 64 Caribeanella ogiensis (Matsunaga). P50173. Apertural view of specimen figur
. Bulletin of the British Museum (Natural History), Geology. FORAMINIFERA OF THE TOGOPI FORMATION 101 Caribeanella ogiensis (Matsunaga) Fig. 64; PL 7, fig. 16 1954 Oinomikadoina ogiensis Matsunaga : 163, text-figs 1-3. 1955 Oinomikadoina ogiensis Matsunaga; Takayanagi: pi. 2, figs 20a, b. 1963 Oinomikadoina ogiensis Matsunaga; Matsunaga : pi. 50, figs 5a-c. Material. 20 specimens. NB 9448, 9449, 9450, 9452. Variation. Maximum diameter 0-49-0-70 mm, thickness 0-15-0-27 mm. Number of chambers in final whorl Fig. 64 Caribeanella ogiensis (Matsunaga). P50173. Apertural view of specimen figured on PL 7, fig. 16. Sample NB 9450. x65. Remarks. Initially like Cibicides, this species develops on each of the later-formed chambers of the final whorl two types of supplementary apertures: one, a spiral slit at the inner margin, the other, a smaller aperture at the basal outer margin of the chamber periphery. Our material agrees closely with the type figures. On the convex ventral surface the sutures are flush or depressed and often marked by a row of coarse pores. On the flattened spiral side the earlier whorls are obscured by thickening of the test; the final whorl has thickened sutures in the early part, narrower and depressed sutures in the later stage. Pores vary in size and distribution, sometimes being sparsely developed. We follow Loeblich & Tappan (1964: C688-9) in regarding Oinomikadoina as a junior synonym of Caribeanella. There is no evidence that Caribeanella in the Indo-Pacific is part of the growth cycle of Planor- bulina as Schnitker (1969) claimed. Distribution. Fossil: Pliocene of Japan (Matsunaga 1954, 1963); Matsunaga (1954) also states that the species is found in the Pleistocene of Japan but does not figure the material. Recent: Japan (Takayanagi 1955). Family PLANORBULINIDAE Schwager, 1877 Genus PLANORBULINELLA Cushman, 1927 Type-species: Planorbulina larvata Parker & Jones, 1865. Planorbulinella larvata (Parker & Jones) Figs 65a, b, 66 18
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