. Amphioxus and the ancestry of the vertebrates. Amphioxus; Sea squirts; Hemichordata. 184 THE ASCWIANS. an 1. I^'ig- 94- — Diagram of a dissection of Ascuiia, from the right side. (After Herdman.) The peribranchial cavity is indicated by the black shading. ayi. Anus. Atrial siphon, c.^. Cerebral ganglion, beneath which is the subneural gland and its duct. dj. Dorsal lamina, end. Endostyle. ^. Gonad. ^.d. Genital duct. i/it. Intestine. ;//. Muscular mantle, oes. Aperture, leading from branchial sac into oesophagus, Buccal siphon, ph. Branchial sac. St. Stomach. /. Test or c
. Amphioxus and the ancestry of the vertebrates. Amphioxus; Sea squirts; Hemichordata. 184 THE ASCWIANS. an 1. I^'ig- 94- — Diagram of a dissection of Ascuiia, from the right side. (After Herdman.) The peribranchial cavity is indicated by the black shading. ayi. Anus. Atrial siphon, c.^. Cerebral ganglion, beneath which is the subneural gland and its duct. dj. Dorsal lamina, end. Endostyle. ^. Gonad. ^.d. Genital duct. i/it. Intestine. ;//. Muscular mantle, oes. Aperture, leading from branchial sac into oesophagus, Buccal siphon, ph. Branchial sac. St. Stomach. /. Test or cellulose mantle, tn. Buccal or coronary tentacles. ty. Typhlosole; internal fold of intestinal wall, to increase the digestive 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 Willey, Arthur, 1867-. New York, London, Macmillan
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License: Licensed
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishernewyo, bookyear1894
