[Translation from the Russian. - Test extremely small, dorsoventrally compressed, consisting of two distinctly visible whorls, the second being approximately five times larger than the first. Outline of the test broadly oval. Periphery rounded, lobate. In the final whorl there are four spherical, slightly compressed chambers closely adhering to one another; the final chamber slightly drawn-out upward. Chamber arrangement rotaloid. Chambers of the final whorl differ strongly in size. The final chamber is particularly large, constituting nearly one-half the entire whorl. Chambers semispherical on the dorsal side, and pear-shaped on the ventral side. All chambers adhere closely to one another. The umbilicus is in the form of a faintly outlined small indentation. Sutures depressed; on the dorsal side short, weakly curved, nearly straight; on the ventral side they are longer, more strongly curved. All the sutures on the ventral side, taken together, form an oblique cross (fig. 20). Aperture slitlike, extending along the marginal suture from the umbilicus to the periphery. Wall thin, transparent, smooth. Dimensions of holotype: Greatest diameter 0. 10 mm.; smallest diameter 0.06 mm.

[Variability. -In some specimens the final camber is smaller and not as drawn-out upward as in typical specimens. Moreover, in such specimens, as if to retain the same volume, there are four and one-half or even five chambers instead of the usual four chambers. Besides, the dimensions of the test vary slightly.

[Comparison. - In our opinion, the closest species, considering the extremely small size of the test, is Globigerina globigerinellinoides Subbotina. However, the latter has a larger number of chambers in the last whorl, which, in addition, are differently arranged; it also has a different aperture, with a lip. ]

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