Genus Cytherideis Jones, 1856 



Cytherideis mayeri (Howe and Garrett) . 



Plate 3, Figures 12, 13 



Bythocypris ? mayeri Howe and Garrett, 1934, 

 Louisana Dept. Cons., Geol. Bull. no. 4, p. 29, 

 pi. 1, figs. 8-10. 

 Xestoleberis mayeri (Howe and Garrett), 

 Schmidt, 1948, Jour. Paleontology, vol. 22, 

 p. 410, pi. 63, fig. 10, fig. 2 (text). 

 Cytherideis mayeri (Howe and Garrett), Blake, 

 1950, Jour. Paleontology, vol. 24, p. 179. 

 Munsey, 1953, Jour. Paleontology, vol. 27, p. 13, 

 pi. 3, fig. 4. 

 Dimensions: Fig. 13: length 0.73 mm; height 



0.29 mm ; convexity 0.16 mm. 

 Occurrence : Peedee only. This species is rare 

 to common in subsurface Eocene and Paleocene 

 formations in North Carolina. Localities A and E. 

 U.S.N.M. 129022, 129023. 



Remarks: Schmidt (1948, p. 410) has recently 

 described the species. 



Genus Monoceratina Roth, 1928 



Monoceratina biloba Schmidt 



Plate 3, Figures 14, 15 



Monoceratina biloba Schmidt, 1948, Jour. Pal- 

 eontology, vol. 22, p. 412, pi. 61, fig. 9. 



Dimensions: Fig. 14: length 0.45 mm; height 

 0.27 mm. 



Occurrence: Peedee, locality A. U.S.N.M. 1290- 

 24, 129025. 



Remarks: Only one specimen, a molt, was ob- 

 tained at the outcrop during the present study. 

 The bulbous node on the ventral lobate area is 

 well developed on our specimen, a right valve. 

 Also figured is a complete carapace from a water 

 well at the Oak Grove Air Base, Jones County, 

 N. C. This specimen was taken from a sample at 

 200-210 feet, Peedee formation. Schmidt (1948, 

 p. 412) has recently described the species. 



Genus Loxoconcha Sars, 1866 



Loxoconcha neusensis Brown, n. sp. 



Plate 6, Figure 10 



Carapace long in relation to width, subquad- 

 rate in lateral view ; dorsal margin straight ; ven- 

 tral margin sinuous ; anterior margin broadly 

 rounded ; posterior margin rounded ventrally, 

 slightly angulate to straight dorsally, bluntly cau- 

 date. Anterior and posterior ends compressed, 

 posterior more so. Surface coarsely reticulate with 

 rounded to angular pits generally subcircular in 



relation to margins. Ribs most prominent postero- 

 ventrally. 



Dimensions: Holotype: length 0.55 mm; height 

 0.19 mm; biconvexity 0.18 mm. 



Occurrence: Peedee only, localities A, C, and 



E. U.S.N.M. 129026. 



Remarks: This species is close to L. fletcheri 

 Israelsky from the Cretaceous of Texas and Ar- 

 kansas. It is more tumid and the posterior margin 

 less rounded than that species. 



Loxoconcha seraphae Brown, n. sp. 

 Plate 6, Figures 9-11 



Carapace subelliptical in lateral view; highest 

 medially; widest just posterad of median; dorsal 

 margin straight; ventral margin gently convex, 

 swinging upward to a blunt submedial caudate 

 process ; anterior margin broadly rounded, faintly 

 rimmed above and below ; posterior obtusely angl- 

 ed dorsally ; postero-ventral margin bears a strong 

 lateral keel. 



Surface strongly reticulate, punctate; puncta 

 arranged in subcircular rows generally converging 

 posterad and anterad. 



Hinge characteristic of genus. Inner margin 

 and line of concrescence distinctly separate along 

 anterior margin. 



Dimensions : Holotype : length 0.52 mm ; height 

 0.32 mm; biconvexity 0.20 mm. 



Occurrence : Peedee only, localities A, C, E, and 



F. U.S.N.M. 129027, 129028. 



Genus Orthonotacythere Alexander, 1933 



Orthonotacythere sulcata Brown, n. sp. 



Plate 6, Figures 6-8 



Shell small, quadrate in side view ; dorsal mar- 

 gin straight; ventral margin convex; anterior 

 margin broadly and evenly rounded; posterior 

 margin obtusely rounded, moderately caudate 

 dorsally. 



Antero-median broad vertical sulcus separates 

 anterior third from posterior two-thirds of valve. 

 Surface finely and evenly reticulate. Eight prom- 

 inent tubercles on the valves ; two anterior tuber- 

 cles lie behind and adjacent to the anterior mar- 

 gin ; three tubercles, most pronounced posterad, 

 parallel and lie above the ventral margin ; 2 weak 

 tubercles subparallel and above the posterior mar- 

 gin medially and dorsally ; a single large tubercle 

 lies posterad of the median line dorsally. A prom- 

 inent eyespot lies adjacent to the antero-dorsal 

 junction. Hingement typical of the genus. 



Dimensions : Holotype r length 0.45 mm ; height 



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