. Annals of tropical medicine and parasitology. Parasites. Eggs. The eggs are slightly oval witii blunt extremities. They ineasure about 65/* long and 52/u broad, and the contained embryo, which is enveloped in an albuminous covering, is also oval, and measures about 36/1/ by 2611. The hooks on the embryo arc about iO/« long. Fig. 7. Fig. 7. G. amiraliciisis. I'ully developed uterus, p., uterine pi Diagnosis. Although the hooks had been lost from our specimens there seems no reason to doubt that the worm is Gyrocoelia australiensis, Johnston. It is, however, necessary to point out that Johnsto
. Annals of tropical medicine and parasitology. Parasites. Eggs. The eggs are slightly oval witii blunt extremities. They ineasure about 65/* long and 52/u broad, and the contained embryo, which is enveloped in an albuminous covering, is also oval, and measures about 36/1/ by 2611. The hooks on the embryo arc about iO/« long. Fig. 7. Fig. 7. G. amiraliciisis. I'ully developed uterus, p., uterine pi Diagnosis. Although the hooks had been lost from our specimens there seems no reason to doubt that the worm is Gyrocoelia australiensis, Johnston. It is, however, necessary to point out that Johnston (1912) figures five minute testes lying immediately anterior to the ovary. Our specimens present a similar appearance, but these structures seem to us to be detached ovarian acini. Further, Johnston (1914) recorded a Gyrocoelia sp. from L. lobatus, which worm he obtained from the Australian Tropical Institute, the same source as our material, so it is practically certain his unnamed species is also G. australiensis. Clausen (1915), in his description of G. paradoxa (von Linstow) (= Brochocephalus paradoxus), figures a bi-lobed or double rcccptaculum seminis enclosed in the uterine ring. Our specimens present a somewhat similar appearance, but the structure is obviously the degenerate ovary and vitellarium. The occurrence, in our worm, of the male and female sexual organs at different times, which results in a strobila being male when young and female when middle aged, raises the point as to whether. 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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