. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 322 CARRIKER, PERSON, LIBBIN, AND VAN ZANDT RESULTS Regenerative changes and rates In 1958 all 32 individuals of cinerca and Enplenra caudata etterae which were allowed to resume boring (experiment a), had regenerated the pro- boscis, and this organ, though proportionately small, appeared normal under the dissecting microscope. Traces of pink color (probably myoglobin) appeared in the musculature of the buccal mass by the 15th day, and by the 20th day this became more intense. The normal buccal mass in the adult
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 322 CARRIKER, PERSON, LIBBIN, AND VAN ZANDT RESULTS Regenerative changes and rates In 1958 all 32 individuals of cinerca and Enplenra caudata etterae which were allowed to resume boring (experiment a), had regenerated the pro- boscis, and this organ, though proportionately small, appeared normal under the dissecting microscope. Traces of pink color (probably myoglobin) appeared in the musculature of the buccal mass by the 15th day, and by the 20th day this became more intense. The normal buccal mass in the adult snail is brightly colored. The 32 individuals of both species which were sacrificed at four day intervals after proboscisectomy (experiment b), had all begun regeneration of the proboscis, the degree of development increasing with time past amputation. By the 4th day, at least a filmy cap of loose tissue covered the stump of the proboscis and bound the amputated ends of the esophagus, buccal artery, ducts of the salivary glands, and other tissues to it (Fig. Ic). In two snails (one of each species) the external form of the minute radular sac was already clearly evident. Between the 8th and 12th days after the operation, the four individuals of both species had formed minute normal proboscides and radulae (Fig. Id), and by the 16th day the radulae had approximately doubled in length. 35 - 30 O RESUMED u BORING 9 • c? o UJ c/2 O in o o0 OD ^u O LT_ Q_ g '5 < '° Q NON BORING. Urosalpinx. 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 Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laborat
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