. Zoology for high schools and colleges. Zoology. ANATOMY OF ROLOTRUBIANB. 139 on one side arises the " respiratory tree," which has but one main stem, and is only occasionally held in place by mus- cular threads. The branches are numerous, and are smaller. Fig. 89.—Pentactafr(mdosa. <, tentacles; I, longitudinal muscIeB; r, retractor mus- cles of the teutacular system; i, intestine; c, cloaca-, ft, respiratory tree; it, water- vascular ring or nng-canal, v, radial water-vascular canal; m. madreporic body; pp, polian vesicles; am, ampullae; a, a', pseudo-haemal contractile vessels
. Zoology for high schools and colleges. Zoology. ANATOMY OF ROLOTRUBIANB. 139 on one side arises the " respiratory tree," which has but one main stem, and is only occasionally held in place by mus- cular threads. The branches are numerous, and are smaller. Fig. 89.—Pentactafr(mdosa. <, tentacles; I, longitudinal muscIeB; r, retractor mus- cles of the teutacular system; i, intestine; c, cloaca-, ft, respiratory tree; it, water- vascular ring or nng-canal, v, radial water-vascular canal; m. madreporic body; pp, polian vesicles; am, ampullae; a, a', pseudo-haemal contractile vessels (from Carus); 0, ovary; ov, JViduct.—Drawn by J. S. Kiugsley from a dissection made by the author. and paler than the ovarian tubes. The water enters the cloaca (c), passes into the respiratory tree (b), oozes out of. 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 Packard, A. S. (Alpheus Spring), 1839-1905. New York, H. Holt and Company
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Keywords: ., bookcentury1800, bookdecade1880, bookpublishe, booksubjectzoology
