Diagnostic methods, chemical, bacteriological and microscopical, a text-book for students and practitioners . , beginning anteriorly atthe level of the ventral sucker. The ova are oval in shape, operculated, andmeasure 30 microns in length and 11 in width. This worm has been found in the gall-ducts of man and other animals,especially in Russia, Siberia, Hungary, and Japan. (4). Opisthorchis sinensis. Synonyms.—Distomum sinense; distomum spathulatum; distomum hepatisendemicum seu perniciosum; distomum hepatis innocuum; distomum japonicum;the Japanese or Chinese liver-fluke. This parasite measur
Diagnostic methods, chemical, bacteriological and microscopical, a text-book for students and practitioners . , beginning anteriorly atthe level of the ventral sucker. The ova are oval in shape, operculated, andmeasure 30 microns in length and 11 in width. This worm has been found in the gall-ducts of man and other animals,especially in Russia, Siberia, Hungary, and Japan. (4). Opisthorchis sinensis. Synonyms.—Distomum sinense; distomum spathulatum; distomum hepatisendemicum seu perniciosum; distomum hepatis innocuum; distomum japonicum;the Japanese or Chinese liver-fluke. This parasite measures 10 to 20 mm. in length and 2 to 5 mm. in breadth;long and lanceolate; reddish and nearly transparent when fresh; cuticle with-out spines; oral larger than ventral sucker, on the ventral face of anteriorextremity; ventral sucker about one-fourth of body length posterior to former;pharynx and esophagus small and a bifurcation of the latter close to oralsucker; ceca unbranched, reaching close to the posterior extremity; excretorysystem as in the previous species; in the posterior fourth of body the two. Fig. 53.—Opisthorchis felineus; from liverof cat; 10 X I. {Tysonafter Braun.) i6o DIAGNOSTIC METHODS. testes, one in front of the other, with from four to six dendritic branches;no cirrus or pouch; genital pore in the median Hne just in front of theacetabulum; ovary tri-lobed and placed just anterior to a large gourd-shapedreceptaculum seminis both in the median line and anterior to testes; uteruswell-developed and coiled in the middle area of the body between the ovaryand ventral sucker; vitelline follicles in the marginal fields along the middlethird of the body. The ova are brown, oval, operculated, and measure 27 to 30 microns in length and 15 to 17 in width. This fluke is comparatively common in Japanand eastern Asia and has been reported in infests the gall-ducts and has been found bothin the pancreatic duct and intestine. Little isknown of the intermediate
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