. Annotationes zoologicae japonenses / Nihon do?butsugaku iho?. NOTE ON A ü IG ANTIC AURICULARIA. 340 they seem to be somewhat more numerously present than in his specimens, a fact which may be in relation with the larger >i/,e of the body. The diameter of the wheel varies within a range of 70- IQ2iJ fi. The nave is solid and cup-shaped, facing the body surface witli the convex side; the spokes number 11-17. The ring seems to be somewhat thinner in my specimens than in Chun's ; it shows no transverse slits that should indicate its origin by fusion of lateral outgrowths from the ou-er end of
. Annotationes zoologicae japonenses / Nihon do?butsugaku iho?. NOTE ON A ü IG ANTIC AURICULARIA. 340 they seem to be somewhat more numerously present than in his specimens, a fact which may be in relation with the larger >i/,e of the body. The diameter of the wheel varies within a range of 70- IQ2iJ fi. The nave is solid and cup-shaped, facing the body surface witli the convex side; the spokes number 11-17. The ring seems to be somewhat thinner in my specimens than in Chun's ; it shows no transverse slits that should indicate its origin by fusion of lateral outgrowths from the ou-er end of the spokes. The inner contour- line of the ring is finely serrated, instead of being smooth as in Chun's specimens ; there exist 4-6 teeth in the interval between the outer ends of every two Fig. I. Wheel-shaped calcareous deposit, viewed obliquely from side, x 300. Fig. 2. Siine seen from above, x 300. Fig- 3. Anterior parts of mid-gut and adjacent organs seen from above ; drawn from a preserved specimen, x 22. ne anterior entero- ccel ; l'y hydroccel ; Ipe left posterior enteroccel; oe oesophagus; pc pore- canal ; rpe right posterior enteroccel ; $t mid-gut ; icp water-pore. As regards the alimentary canal, the oesophagus seems to be relatively longer than is represented in Chun's figures. At its junction with the mid-gut there is a short strong constriction. The mid-gut is a large, elongate-cylindrical sac of a light brown colour ; it usually contains no solid substance. As it lengthens with the growth of the larva, the posterior part becomes broader than the;. 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
