. Annotationes zoologicae japonenses / Nihon do?butsugaku iho?. NOTES ON SOME SPECIES OF RETEPORA AND ADLONEL'.A 627 surmounted each with a short oral spine {h). Ventral avicularia are distinguishable into three forms, «, b and c, each with two retractor Fig. Fig. 5. Retepora crennlata, n. sp. a. Two zooecia with ovicells. x 30. b. A few zooecia with three kinds of frontal avicularia. x 30. c. The operculum and two pear-shaped oral glands hanging down from the distal margin of tentacular sheath, x 100. The shield-like mandible (a) of frontal avicularium with two retractor muscles and an av
. Annotationes zoologicae japonenses / Nihon do?butsugaku iho?. NOTES ON SOME SPECIES OF RETEPORA AND ADLONEL'.A 627 surmounted each with a short oral spine {h). Ventral avicularia are distinguishable into three forms, «, b and c, each with two retractor Fig. Fig. 5. Retepora crennlata, n. sp. a. Two zooecia with ovicells. x 30. b. A few zooecia with three kinds of frontal avicularia. x 30. c. The operculum and two pear-shaped oral glands hanging down from the distal margin of tentacular sheath, x 100. The shield-like mandible (a) of frontal avicularium with two retractor muscles and an avicularian gland, x 2oq, e. The semicircular mandible (/') of front il avicularium. X300. f. The triangular mandible (r) of frontal avicularium. x 200. g. The elongate shield-like mandible of vicarious avicularium. x200. h. Young zooecia ; one of them with oral spines on the toathed apertural margin. X30. muscles and a single avicularian gland. Form a (d) is of an oblong shape, with variously directed, elongate shield-like mandible which is pointed and slightly curved at apex; it is situated at varying positions in the middle or rather posterior parts of ventral zooeciaL surface. Form b (e) is of an oval shape, found in the same. 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 Nihon Do?butsu Gakkai; To?kyo? Do?butsu Gakkai. Tokyo : Societas
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Keywords: ., bookcentury1800, bookcollectionbiod, bookdecade1890, bookyear1897
