. Elementary text-book of zoology. I go ANNULATA. ARENICOLA. SEGMENTS. APPENDAGES. NERVOUS SYSTEM. EXCRETORY SYSTEM. APERTURES. GILLS. Prostotnium. Brain. Mouth. Peristomiunil Nerve ring. Otocyst. 2 3 4 Parapodia. Nephridiumi Nephridio- 5 11 2 pore I 6 3 ir 2 7 4 3 8 5 4 Gill I 9 „ . 6 S II 2 lo 6 " 3 II " 4 12 Nerve cord. 13 II 6 H " 7 15 M 8 i6 ,1 9 17 II 10 i8 II II 19 II 12 20 " 13 Tail, &c. Anus. III.—HIRUDO. Phylum - Sub-Phylum Class Annulata (p. 237). Annelida (p: 238). HiRUDiNEA (p. 239). Fig. 116.—The Medicinal Leech (Hirudo medicinalis).. The more tapering end
. Elementary text-book of zoology. I go ANNULATA. ARENICOLA. SEGMENTS. APPENDAGES. NERVOUS SYSTEM. EXCRETORY SYSTEM. APERTURES. GILLS. Prostotnium. Brain. Mouth. Peristomiunil Nerve ring. Otocyst. 2 3 4 Parapodia. Nephridiumi Nephridio- 5 11 2 pore I 6 3 ir 2 7 4 3 8 5 4 Gill I 9 „ . 6 S II 2 lo 6 " 3 II " 4 12 Nerve cord. 13 II 6 H " 7 15 M 8 i6 ,1 9 17 II 10 i8 II II 19 II 12 20 " 13 Tail, &c. Anus. III.—HIRUDO. Phylum - Sub-Phylum Class Annulata (p. 237). Annelida (p: 238). HiRUDiNEA (p. 239). Fig. 116.—The Medicinal Leech (Hirudo medicinalis).. The more tapering end is anterior. The centre,.individual is seen in the action 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 Masterman, Arthur Thomas. Edinburgh, E. & S. Livingstone
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Keywords: ., bookcentury1900, bookcollectionbiod, bookdecade1900, bookyear1902
