. Bulletin of the British Museum (Natural History), Geology. OF NORTH-WEST EUROPE 283 Cytheretta judaea (Brady) (PI. I, fig. I, 4-7, 9; Text Fig. 8) 1868 Ilyohates ? judaea Brady: 112, pi. 13, figs 17, 18. 1894 Cytheretta rubra Miiller: 382, pi. 8, figs. 9, 10, 16; pi. 39, figs 8-22, 24. 1912 Cytheretta rubra Miiller; Miiller: 366. 1950 Cytheretta subradiosa (non. Roemer; pars); Ruggieri: 9. 1953 Cytheretta subradiosa (non. Roemer; pars); Ruggieri: 102. 1955 Cytheretta rubra Miiller; Kruit: 482, pi. 5, figs ga-c. 1958 Cytheretta subradiosa (non. Roemer; pars); Puri: 186, pi. i, figs 3-7. 1959
. Bulletin of the British Museum (Natural History), Geology. OF NORTH-WEST EUROPE 283 Cytheretta judaea (Brady) (PI. I, fig. I, 4-7, 9; Text Fig. 8) 1868 Ilyohates ? judaea Brady: 112, pi. 13, figs 17, 18. 1894 Cytheretta rubra Miiller: 382, pi. 8, figs. 9, 10, 16; pi. 39, figs 8-22, 24. 1912 Cytheretta rubra Miiller; Miiller: 366. 1950 Cytheretta subradiosa (non. Roemer; pars); Ruggieri: 9. 1953 Cytheretta subradiosa (non. Roemer; pars); Ruggieri: 102. 1955 Cytheretta rubra Miiller; Kruit: 482, pi. 5, figs ga-c. 1958 Cytheretta subradiosa (non. Roemer; pars); Puri: 186, pi. i, figs 3-7. 1959 Cytheretta subradiosa (non. Roemer; pars); Ruggieri: 190. Diagnosis: A species of Cytheretta with sub-parallel dorsal and ventral margins and unornamented surface. The inner margin is almost straight. Material: Thirteen valves and carapaces from the beach sand at Rimini; lo 3792-4; 3810. Type locality and horizon : Haifa, Recent. Stratigraphical Range and distribution: Recent—Rhone delta, Monaco, Naples, Adriatic Sea, Syria, Aegean Sea; Quaternary of Italy? Description: Sexual dimorphism is not strong; the males are more elongate. Sex ratio 1-5. The left valve has a weak posterior hinge ear; the dorsal margin is slightly convex; the anterior margin is strongly obliquely rounded. The ventral margin is almost straight and roughly parallel to the dorsal margin; the posterior margin is obliquely rounded. The greatest height is just to the posterior of centre. The ventral margin of the right valve is concave. In dorsal view the carapace is ovate, tapered towards the anterior. The shell is smooth, but with conspicuous opaque areas; there is a large one in the central region and a smaller one in the anterior. These are approximately constant in position in all specimens, producing the black areas seen in PL i, fig. 4. The antero-dorsal lobe of the hinge of the left valve is flat; the postero-median swelling is pronounced. In the right valve the posterior tooth is almost equal in pro
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