. Outlines of zoology. Zoology. ARENICOLA. '97 Food canal.—(1) The buccal cavity is protrusible as a "proboscis" or introvert, which grips the sand, and bears. Fig. 87.—Dissection of lob-worm from dorsal surface. M., Opening of retracted buccal cavity ; z\, gullet; gl'., diverticula on first diaphragm; gl"., oesophageal glands ; d., dorsal blood vessels ; ef ., first efferent branchial; £-., stomach intestine ; n$., sixth nepnridium; efls., thirteenth efferent branchial; a/"13., thirteenth afferent branchial; a., anus; a/"1., first afferent branchial; h., heart of left
. Outlines of zoology. Zoology. ARENICOLA. '97 Food canal.—(1) The buccal cavity is protrusible as a "proboscis" or introvert, which grips the sand, and bears. Fig. 87.—Dissection of lob-worm from dorsal surface. M., Opening of retracted buccal cavity ; z\, gullet; gl'., diverticula on first diaphragm; gl"., oesophageal glands ; d., dorsal blood vessels ; ef ., first efferent branchial; £-., stomach intestine ; n$., sixth nepnridium; efls., thirteenth efferent branchial; a/"13., thirteenth afferent branchial; a., anus; a/"1., first afferent branchial; h., heart of left 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 Thomson, J. Arthur (John Arthur), 1861-1933. Edinburgh, Glasgow and London, H. Frowde and Hodder & Stoughton
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Keywords: ., bookauthorth, bookcentury1800, bookdecade1890, booksubjectzoology
