Dr. Nagy I. Zoltán szerk.: Fragmenta Mineralogica Et Palaentologica 7. 1976. (Budapest, 1976)

GENUS Operculina D'ORBIGNY, 1826 This genus is distinguished from Assilina by the more rapidly opening nature of the spire and fewer whorls. 1937 Operculina jiwani DAVIES & PINFOLD, p. 39, pi. 5, figs. 11-14, 16. Test medium, compressed, it measures about 3.5 mm. in diameter and 2.0 mm in thickness. It is composed of 3^- whorls. The whorls are divided up by prominent form of the whorls resemble a small coil of rope. At the centre, there are a small group of pillars which marks the pole of the test. . In the axial section, the chief thickness of the test is at the poles, the peripher! is subrounded. The pillars are more concentrated at the pole. The marginal cord is thick, It measures about 1/3 the spiral cavity. Occurence: This species is found together with Nummulites atacicus

, N. globulus, N. solitarius in the Thebes Formation of Gabal El Shaghab. Distribution: Operculina jiwani was described by DAVIES from the Lower Eocene of Khairabad limestone and the Patala Shales, Punjab Salt Range, India. Stratigraphie range: Lower Ypresian. This subspecies differs from the above species of DAVIES by its large size, it measures about 7.0 mm in diameter and 2.2 mm in thickness. Equatorial section shows the presence of 4^- whorls. The last whorls is two times higher than the previous one. The number of chamber are 12, 18, 24, 32 in the four whorls respectively. The septa are thin, regular, nearly upright for the first twothirds of their height, then recurved in the upper third. Occurence: This subspecies is found together with Operculina jiwani in the Thebes Formation of Gabal El Shaghab. Age: Lower Ypresian. Operculina jiwani DAVIES 1937 (pl. 1, figs. 1, 2; pi. 3, fig. 2) granulated septa, and spiral channel. The Operculina jiwani DAVIES grandis n. subsp. (pl. 1, fig. 3; pi. 2, fig. 2; pi. 3, fig. 1. pi. 4. fig. 2.) Operculina patalensis DAVIES, 1937 (PI. 2, fig. 9) 1937 Operculina patalensis DAVIES, p. 38, pi. 5, figs. 6, 17-19, 26. Test large, complanate, with prominent umbo, a small cluster of granules appear 64