. Fresh-water biology. Freshwater biology. 4o6 FRESH-WATER BIOLOGY 142 (143) Testes oblique, separated by greatly enlarged branch of uterus. Dasymeira NicoU 191 r. Body moderately flattened, spinous. Pharynx large, crura wide, not reaching posterior end. Excretory vesicle Y-shaped, with many side branches. Genital pore median, slightly preacetabular. Cirrus sac short, plump; cirrus long. No receptaculimi seminis; Laurer's canal present. Vitellaria branching, lateral. Uterus coiled in posterior end, ascending ramus wide, nearly straight, metraterm long, muscular. Ova 35 /i long. Type and only s
. Fresh-water biology. Freshwater biology. 4o6 FRESH-WATER BIOLOGY 142 (143) Testes oblique, separated by greatly enlarged branch of uterus. Dasymeira NicoU 191 r. Body moderately flattened, spinous. Pharynx large, crura wide, not reaching posterior end. Excretory vesicle Y-shaped, with many side branches. Genital pore median, slightly preacetabular. Cirrus sac short, plump; cirrus long. No receptaculimi seminis; Laurer's canal present. Vitellaria branching, lateral. Uterus coiled in posterior end, ascending ramus wide, nearly straight, metraterm long, muscular. Ova 35 /i long. Type and only species. Dasymetra conferta NicoU 1911. Length to mm., maximum width i to mm., near center Spines long, straight. Oral sucker mm. in diameter. Acetabulum saine size or little less, about mm. from anterior end. Pharynx mm. in diameter; esophagus short; crura wide, enlarged at ends. Ex- cretory tubules pigmented. Testes obUque, separated by uterus. Ovary at right posterior margin of acetabulum. Vitellaria lateral, extend from genital pore to posterior border of right testis; follicles large. Uterus spacious; descending ramus dorsal, small; posterior coil behind ends of intestinal crura; ascending ramus irregular, broad, extending to acetabu- lum. Metratem^i with thick muscular walls. Ova dark brown, 33 to 37 by 16 to 19 ju. In mouth (?) of diamond water-snake {Tropidonotus rhombifer); North America, locality unknown. [Fig. 70s. Dasymetra conferta. Ventral view. X iS- (After Nicoll.). 143 (142) Testes lateral, symmetrical. 144 144 (14s) Topography inverted, , median line. genital pore right and ovary left of . . PneumatophUus Odhner 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 Ward, Henry Baldwin, 1865-1945; Whipple, George Chandler, 1866-1924. joint author. New York, John
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfreshwa, bookyear1918
