. Contribution à l'étude des Gastéropodes, opisthobranches et en particulier des Céphalaspides. Opisthobranchia. GASTEROPODES OPISTHOBRANCHES 141 plus avant dans celte direction. Je ne ne m'étendrai donc pas plus longuement sur ce sujet. RÉSUMÉ. — Les recherches que nous venons de résumer nous. O^ fi I I i W;,. 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 Guiart, Jules, 1870-. Lille, Bigot Frères

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Keywords: ., bookcentury1900, bookcollectionbiod, bookdecade1900, bookyear1901