MILIOLIDAE - Acta Palaeontologica Polonica

140 EWA LUCZKOWSKA
Quinqueloculina suborbicularis d'Orbigny) from the Antilles it differs in
a thicker test and a slitlike, not circular aperture.
Distribution. - Poland: Lower Sarmatian, (Miechocin, Mokrzysz6w,
Mach6w). USSR: Middle Sarmatian, West Georgia.
Varidentella latelacunata (Venglinsky, 1953)
(PI. XXVII, Figs 7a-c, 8a, b)
1953. Miliolina latelacunata Venglinsky; 1. V. Venglinsky, p. 131, PI. 2, Figs 7-9.
1958. Miliolina latelacunata Venglinsky; I V. Venglinsky, p. 79, PI. 14, Fig. 3a-c.
Material. - 20 specimens (ColI. No. F-191).
Dimensions: L 0.4-0.5; B 0.22-0.32; T 0.15-0.20.
Description. - Test narrowly oval, strongly elongated, periphery broadly
rounded or somewhat contracted; chambers tubular, inflated, last
chamber bent at the base and nearly straight or S-shaped near the aperture,
middle chamber convex and projecting above the surface, fifth
chamber often invisible; sutures strongly depressed, narrow; surface
smooth; aperture circular or transversely oval, surrounded with everted
border and with a low and broad, slightly bifid tooth.
Variability. This species has typically depressed sutures and a very
variable shape of the aperture, circular to transversely oval. Consequently,
the shape of tooth is also variable, quadrate (PI. XXVII, Fig. 8) to low
and broad, with lateral processes (PI. XXVII, Fig. 7). The shape of the
test varies from oval to narrowly-oval. There are 3-5 chambers visible
from outside.
Remarks. - Compared with the description and illustration of Venglinsky
this form has a more variable shape of the aperture, which is
rarely circular, and a broader tooth. It is very similar to Cycloforina
stomata n.sp., but differs in a more elongated shape of the test, more
depressed sutures, contracted periphery and smaller aperture. It is also
similar to Varidentella sulacensis (Gerke), differs however in its more
inflated chambers and everted border of the aperture.
Distribution. - Poland: Lower Sarmatian, (Budy, Grzyb6w, Mielec,
Rytwiany, Zrecze). USSR: Lower Sarmatian, Transcarpathians.
Varidentella pseudocostata (Venglinsky, 1958)
(PI. XXVI, Fig. 7a-c)
1958. Miliolina pseudocostata Venglinsky; 1. V. Venglinsky, p. 70, PI. 10, Figs 1-3;
PI. 11, Figs 1-3.
1962. Quinqueloculina pseudocostata (Venglinsky); 1. V. Venglinsky, p. 74, Pi. 4,
Figs 3, 4.
Material. - 42 specimens (ColI. No. F-192).
Dimensions: L 0.42-0.75; B 0.3-0.57; T 0.23-0.4