. A manual of elementary zoology . Zoology. THE SWAN MUSSEL 319 The ventral wall of the rectum is folded to form a longi- tudinal ridge or typhlosole. The kidneys or organs of Bojanus are two in number and lie side by side below the pericardium. Each is a wide tube, doubled on itself, with one limb above the other, and the two ends together in front. The lower il. sp. - -,%nt. Fig. 227.—A semi-diagrammatic drawing of a trans- verse section of the swan mussel in the region of the hinder part of the foot. an., Auricle; B, glandular limb of kidney; B', non-glandular limb of the same ;
. A manual of elementary zoology . Zoology. THE SWAN MUSSEL 319 The ventral wall of the rectum is folded to form a longi- tudinal ridge or typhlosole. The kidneys or organs of Bojanus are two in number and lie side by side below the pericardium. Each is a wide tube, doubled on itself, with one limb above the other, and the two ends together in front. The lower il. sp. - -,%nt. Fig. 227.—A semi-diagrammatic drawing of a trans- verse section of the swan mussel in the region of the hinder part of the foot. an., Auricle; B, glandular limb of kidney; B', non-glandular limb of the same ; cam., commissures between cerebral and parietosplanchnic ganglia; , epibranchial spaces; f., foot; gen., gonad; , inner gill; , interlamellar junction; , interlamellar spaces; int., intestine; , muscular part of the foot ; ////., mantle lobe ; , outer gill;/;//., pericardium; rm., rectum; v., ventricle ; , vena 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 Borradaile, L. A. (Lancelot Alexander), 1872-1945. London : H. Frowde, Hodder & Stoughton
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectzoology, bookyear1920
