. Fresh-water biology. Freshwater biology. 143 (142) Testes lateral, symmetrical. 144 144 (14s) Topography inverted, , median line. genital pore right and ovary left of . . PneumatophUus Odhner Broad, flat distomes of submedian size with moderately de- veloped suckers. Greatest width behind center, tapering to anterior end, rounded posteriorly. Skin spinous. Suckers in anterior third of body, acetabulum slightly larger. Genital pore dextral, near fork of intestine, half way between suckers. Oral sucker slightly subterminal, pharynx present, esophagus very short. Crura extend to or j
. Fresh-water biology. Freshwater biology. 143 (142) Testes lateral, symmetrical. 144 144 (14s) Topography inverted, , median line. genital pore right and ovary left of . . PneumatophUus Odhner Broad, flat distomes of submedian size with moderately de- veloped suckers. Greatest width behind center, tapering to anterior end, rounded posteriorly. Skin spinous. Suckers in anterior third of body, acetabulum slightly larger. Genital pore dextral, near fork of intestine, half way between suckers. Oral sucker slightly subterminal, pharynx present, esophagus very short. Crura extend to or just beyond testes, with numerous short lateral projections on outer margin. Excretory vesicle Y- shaped, slender. Stem reaches to anterior margin of testes. Testes opposite, just behind center of body, lobed. Cirrus sac and cirrus moderate in size. Ovary at left posterior margin of acetabulum. Laurer's canal, but no receptaculum seminis. Vi- tellaria extracecal, extend from level of genital pore to anterior part of testes. Uterus with descending and ascending limb pass- ing between testes; thrown into transverse loops that fill post- testicular region. In the lung and trachea of Beterodon platyrhinus and Tropi- donotus sipedon. One species in North America, originally described by Leidy as Distoma variabUe var. b., and listed later by Pratt as Renifer variabilis taken by Odhner as type of the new genus. Fig. 706. PneumatophUus variabilis. Dorsal view. X12. (After Pratt.) 145 (144) Topography direct, , genital pore left and ovary right of median line 146. 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 Wiley & sons, inc. ; [etc. ,etc. ]
Size: 1249px × 2000px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectfreshwa, bookyear1918
