. Annales des sciences naturelles. Zoology; Biology. 324 EUG. DADAY DE DEES par Fisch à son Çyzicus hierosolymitanus, ce qui ne sera cependant confirmé que par une étude complète d'individus provenant de la même localité.. ? Cyzicus Newcombii (Baird). Fig. 7j, a-c. Estheria Newcombii Baird W., 14, ]). 122, Tab. 12, lig. a-d; Simon ii,, 120, p. 454. (c Carapace oval in shape. Beaks prominent, placed near ante- rior extremity the dor- sal margin slopes direct- ly down to the posterior extremity, whichisnear- ly as broad as anterior extremity. Ribs of cara- pace about sixteen in number, narroAver

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. Annales des sciences naturelles. Zoology; Biology. 324 EUG. DADAY DE DEES par Fisch à son Çyzicus hierosolymitanus, ce qui ne sera cependant confirmé que par une étude complète d'individus provenant de la même localité.. ? Cyzicus Newcombii (Baird). Fig. 7j, a-c. Estheria Newcombii Baird W., 14, ]). 122, Tab. 12, lig. a-d; Simon ii, , 120, p. 454. (c Carapace oval in shape. Beaks prominent, placed near ante- rior extremity the dor- sal margin slopes direct- ly down to the posterior extremity, whichisnear- ly as broad as anterior extremity. Ribs of cara- pace about sixteen in number, narroAver at the beaks, and becoming broader as the descend towards the ventral margin. The intervais of the ribs are dotted with punctations, which are small and very numerous, and run into each other so as to produce a sort of runing pattern. Length nearly 1/2 inch; breadth about 1/4 inch. Hab. California. W. Newcombe, Esq ; Mus. Brit. » Par la forme des valves et la structure de leur surface cette espèce ressemble beaucoup au Cyzicus californicus (Pack) et au Cyzicus tetracerus (Kryn). S. A. Pr/r/r/vï/Fa comparée au Çyzicus californicus (Pack), en le maintenant comme espèce propre. A mon avis il n'est pas impossible que les deux espèces, pro- venant de la même région, soient réellement synonymes. Mais l'étude de nouveaux exemplaires de Cyzicus Newcombii (Baird) est nécessaire pour trancher cette question. Fig. 75. — Cyzicus Newcombi (Baird) (sec. W. Baird). — a, concha a lalere; b, pars valvulae conoliarum ; c, conchae supra visae.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Milne-Edwards, H. (Henri), 1800-1885; Audouin, Jean Victor, 1797-1841; Milne-Edwards, Alphonse, 1835-1900; Perrier, Edmond, 1844-1921; Bouvier, E. -L. , 1856-1944; Grassé, Pierre Paul, 1895-. Paris, New York, Masso