22 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I28 



by Carter, On this basis Elias (1950, p. 301) described as the variety 

 bradii the specimens of Brady which showed the secondary septa. It 

 seems very probable that the forms of Brady and Carter were identical, 

 but Carter's figures were too diagrammatic to be diagnostic. The 

 specimens here figured (fig. 9, U.S.N.M. No. P 2199) are from the 

 Indian Ocean, exact locality unknown, and (fig. 10, U.S.N.M. No. 

 P 2200) from the surface of a mussid coral on the seaward reef in 

 about 3 feet of water, Namu Island, Bikini Atoll. Collected by F. M. 

 Bayer, 



Discussion. — Elias (1950, p. 301) discussed this genus from the 

 literature and the problem as to whether it is labyrinthic (as stated by 

 Carter, Brady, Chapman, and Galloway) or the interior simple as 

 stated by Cushman. 



The family position of this genus is also questionable. Cushman 

 placed it in the Placopsilinidae, subfamily Placopsilininae, although 

 this subfamily is not labyrinthic in the interior. Galloway placed it in 

 the family Lituolidae, subfamily Neusininae, which is labyrinthic. Elias 

 places Bdelloidina in his family Ptychocladiidae, although the type 

 of this family is a calcareous genus, similar only in the attached 

 character. It seems better kept in the Placopsilinidae, but in the sub- 

 family Coscinophragminae with other labyrinthic forms. 



Genus RIMULINA d'Orbigny, 1826, emended 

 Plate 3, figure 8 



Original description.— Ann. Sci. Nat. Paris, ser. i, vol. 7, p. 257, 

 1826. 



Type species. — Rimiilina glabra d'Orbigny, 1826. Monotypic. 



Diagnosis. — Test free, elongate-ovate in outline, consisting of a 

 single chamber in the holotype (and only specimen known) ; wall 

 calcareous, smooth, finely perforate ; aperture an elongate slit extend- 

 ing from the apex, about halfway down the side of the test, surrounded 

 by a slight lip. 



Types. — Holotype (here figured) from the Recent in the Adriatic, 

 deposited in the M.N.H.N., Paris. 



Discussion. — This species has been figured and described as pos- 

 sessing more than one chamber, and with very oblique sutures. These 

 are not at all evident in the holotype, and a search failed to yield 

 additional specimens to check this. Apparently no additional speci- 

 mens have ever been seen. The writers examined the holotype in 

 Paris, and both the color and appearance suggest that this specimen 

 might well be a reworked fossil and not actually a Recent species. 



