. Annals of tropical medicine and parasitology. Parasites. 36i Ovary. The ovarj^ which first appears in about Segment VIII, is definitely bilobed, each lobe being globular, and composed of a number of rounded acini. In full development each lobe measures about yo/i in diameter. Receptaculum and vagina. From the pore the vagina pursues a direct course to a point between the two lobes of the ovary where it dilates into a receptaculum seminis. Vitelline gland. This lies posterior to the ovary and is a conspicuous organ. In full development its trans\erse and anterior diameters measure about 60/&l
. Annals of tropical medicine and parasitology. Parasites. 36i Ovary. The ovarj^ which first appears in about Segment VIII, is definitely bilobed, each lobe being globular, and composed of a number of rounded acini. In full development each lobe measures about yo/i in diameter. Receptaculum and vagina. From the pore the vagina pursues a direct course to a point between the two lobes of the ovary where it dilates into a receptaculum seminis. Vitelline gland. This lies posterior to the ovary and is a conspicuous organ. In full development its trans\erse and anterior diameters measure about 60/< (fig. i).. Fig. 1. Davainea tragopani, ('.ravid segment, mounted whole, showing uterus. <irrus pouch ; ut.—uterus. X 50. Uterus. This first appears as a small cavity immediately anterior to, and between, the two lobes of the ovary. It enlarges and eventually single eggs become isolated in the parenchyma. In the last few segments no trace of the excretory vessels could be seen in either specimen ; it is, therefore, impossible to say definitely whether the eggs extend beyond them or not. But £is there was a definite area between the edge of the segment and the eggs, it would appear that the latter lie internal to the excretory vessel (fig. 2). Eggs. These have a diameter of about 54/< and the onchosphere of about 25//. Diagnosis The species is related to the proglottina type. The following table gives details of the various species described which resemble D. proglottina in being of small size, and at the same time serves to shew the jwints in which D. tragopani differs from related species. I have, unfortunately,. 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 Liverpool School of Tropical Medicine. Liverpool University Press [etc. ]
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