. Fresh-water biology. Freshwater biology. PARASITIC FLATWORMS 399 Body elongate, lanceolate without conspicuous well marked anterior and posterior regions 112 Testes subdivided, forming on one side a series of four and on the other five parts; in all nine separate lobes. Gorgodera Looss 1899. Testis on ovarian side has five parts; the opposite testis lies further an- teriad and is divided into four parts only. In well-developed adults these organs are completely concealed by the coils of the uterus filled with dark brown, almost black eggs. Found in the bladder of various Amphibia: Rana and S
. Fresh-water biology. Freshwater biology. PARASITIC FLATWORMS 399 Body elongate, lanceolate without conspicuous well marked anterior and posterior regions 112 Testes subdivided, forming on one side a series of four and on the other five parts; in all nine separate lobes. Gorgodera Looss 1899. Testis on ovarian side has five parts; the opposite testis lies further an- teriad and is divided into four parts only. In well-developed adults these organs are completely concealed by the coils of the uterus filled with dark brown, almost black eggs. Found in the bladder of various Amphibia: Rana and Salamandra (?). At least two species in North America. Representative American species. Gorgodera minima Cort i9r2. Fig. 690. Gorgodera mimma. Ventral view. Young specimen with but few eggs. X 72. (After Cort.) 113 (112) Two simple testes, elongate-oval, not divided. Gorgoderina Looss 1902. Testes are elongate and have irregular notched margins but do not divide into sections. Vitellaria have only few lobes. Much like the former genus. Adults are difficult to distinguish after the uterine coils cover the testes. Found in the bladder of Amphibia: Bujo, Rana and Salamandra (?). Three species known from North America. Representative American species. Gargoderina attenuaia Stafford 114 ./in) Fig. 691. Gogoderina attenuaia. Ventral view. X 24. (After Cort.) Body elongate; slender anterior region distinct from broad poste- rior region Phyllodisiomum M. Braun 1899. No sharp Une of division marks the transition between the two regions of the body. The vitellaria are sohd masses only shghtly indented marginally. The testes are oblique, well separated from each other, and only weakly lobed if at all. In urinary bladder of fishes and amphibians. Representative American species. Phyllodistomum americanum Osborn 1903. One species (P. americanum Osborn) reported from North America in Amhlysioma; two others doubtful from pike {Esox lucius), bull-head {Ameiurus nebulosus), and perch (Per
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfreshwa, bookyear1918
