. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. Cestode & Spitshergeyi. 423 in depth nearly a quarter of the total dorso-ventral diameter of the worm. The longitudinal musculature is well- developed, consisting of an inner laver (fig. 2, ) of larger, and an outer layer (fig. 2, ) of smaller, bundles of fibres. Of the former there are about twenty bundles dorsally and a similar number ventrally. They lie imme- diately outside the very scanty layer of transverse fibi-es (fig. 2, ), which forms the b
. The Annals and magazine of natural history; zoology, botany, and geology. Natural history; Zoology; Botany; Geology. Cestode & Spitshergeyi. 423 in depth nearly a quarter of the total dorso-ventral diameter of the worm. The longitudinal musculature is well- developed, consisting of an inner laver (fig. 2, ) of larger, and an outer layer (fig. 2, ) of smaller, bundles of fibres. Of the former there are about twenty bundles dorsally and a similar number ventrally. They lie imme- diately outside the very scanty layer of transverse fibi-es (fig. 2, ), which forms the boundary between the cor- tical and medullary parenchyme. At the level of this transverse layer, on tlie ventral side, lie the two large ventral longitudinal excretory canals (figs. 2, 3, e.). Dorsal. v/t. Anop/iri/ocephalus anophrys. Transverse section through a mature segment. , cirrus-sac ; e., e., excretory vessels; , genital atrium; , inner laj-er of longitudinal muscles ; n., n., longitudinal nerves ; , outer layer of longitudinal muscles; ov., ovary; t., t., testes ; , transverse muscles; ttt., uterus; va(/., vagina; vit., yolk-gland. longitudinal canals and transverse connecting vessels between tiie ventral canals appear to be entirely absent. The genital pores are all on the right side. The genital ducts pass dorsally to the excretory canal and ventrally to the longitudinal nerve of that side. 'The external pore leads by a narrow canal into a leather small genital atrium (fig. 2, ), corresponding to that of Tetrabothrius, into which the cirrus-sac and vagina open separately, the latter ventrally to the former. Immediately below the opening of the vagina the wall of the atrium forms a small, rounded,. 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 London, Taylor and
Size: 1959px × 1275px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookce, booksubjectbotany, booksubjectgeology, booksubjectzoology
