. Elementary text-book of zoology, tr. and ed. by Adam Sedgwick, with the assistance of F. G. Heathcote. . FIG. 277.—Pilidium (after E. Metschnikoff). a, free swimming larva with invaginated cavity ; b, later stage, helmet-shaped ; E, E1 the two pairs of ectodermal invaginations; Z>, alimentary canal. R Am D. 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 Claus, Carl, 1835-1899; Sedgwick, Adam, 1854-1913; Sinclair, F. G


. Elementary text-book of zoology, tr. and ed. by Adam Sedgwick, with the assistance of F. G. Heathcote. . FIG. 277.—Pilidium (after E. Metschnikoff). a, free swimming larva with invaginated cavity ; b, later stage, helmet-shaped ; E, E1 the two pairs of ectodermal invaginations; Z>, alimentary canal. R Am D. 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 Claus, Carl, 1835-1899; Sedgwick, Adam, 1854-1913; Sinclair, F. G. (Frederick Granville), b. 1858. London, Swan Sonnenschein & co.


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Keywords: ., book, bookcentury1800, bookcollectionbiodiversity, bookdecade1890