. Bulletin of the British Museum (Natural History). I/O B. R. MANGER The vagina is very muscular, and in transverse sections can be seen to lie dorsally to the cirrus-sac. It crosses over the external vas deferens behind the cirrus pouch, to pass back to the ootj^e in the hindermost region of the ovary. The 'H'-shaped ovary appears to be bi-lobed, of which the aporal lobe is sometimes longer, extending beyond the cirrus-sac. Early in its development the ovary occupies from a quarter to a third of the posterior region of the segment, but may expand to over half the proglottid in terminal segmen
. Bulletin of the British Museum (Natural History). I/O B. R. MANGER The vagina is very muscular, and in transverse sections can be seen to lie dorsally to the cirrus-sac. It crosses over the external vas deferens behind the cirrus pouch, to pass back to the ootj^e in the hindermost region of the ovary. The 'H'-shaped ovary appears to be bi-lobed, of which the aporal lobe is sometimes longer, extending beyond the cirrus-sac. Early in its development the ovary occupies from a quarter to a third of the posterior region of the segment, but may expand to over half the proglottid in terminal segments. Initially the uterus is saccular with a few lateral indentations but in later segments attains greater proportions, becoming much lobed, and is difficult to distinguish from the seminal vesicle. The vitellaria are densely packed into the region outside of the excretory canals. They are round to oblong and form one or two rows. The terminal segment varies between 1-42 x 0-51 mm and 4-1 x o-g mm, the latter being the stage at which the testes are beginning to atrophy and the uterus is expanding, which appears to be the furthest state of maturation attained whilst still attached to the strobila (fig. 5b). Amongst the apolytic segments collected there are none that have reached the fully gravid stage, so that no record of the egg size can be obtained, but in the more. 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 British Museum (Natural History). London : BM(NH)
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