. Fresh-water biology. Freshwater biology. 438 FRESH-WATER BIOLOGY 46 (33) Testes lie in two lateral fields between vitellaria; parasitic in am- phibians, aquatic snakes, and lizards. Ophiotaenia 1,3. Kue igii â â 47 Head globose or somewhat tetragonal. No rostellum. No hooks or spines. Suckers cir- cular or oval, with margins entire. Fifth sucker vestigial. Neck usually long. Testes in two long lateral fields anterior to ovary. Musculature weak. In aquatic snakes and Amphibia. 47 (48) Vagina always anterior to cirrus-pouch, not crossing latter. Ophiotaenia filaroides La Rue 1909. Worms attenu
. Fresh-water biology. Freshwater biology. 438 FRESH-WATER BIOLOGY 46 (33) Testes lie in two lateral fields between vitellaria; parasitic in am- phibians, aquatic snakes, and lizards. Ophiotaenia 1,3. Kue igii â â 47 Head globose or somewhat tetragonal. No rostellum. No hooks or spines. Suckers cir- cular or oval, with margins entire. Fifth sucker vestigial. Neck usually long. Testes in two long lateral fields anterior to ovary. Musculature weak. In aquatic snakes and Amphibia. 47 (48) Vagina always anterior to cirrus-pouch, not crossing latter. Ophiotaenia filaroides La Rue 1909. Worms attenuate, small, thin, flat. Length 80 to no mm., maximum breadth about to mm Suckers deep, muscular, oval, maximum diameter to nam. First proglottids to mm. broad by to mm. long; mature proglottids quadrate or longer than broad; ripe proglottids from mm. to mm. long by mm. to mm. broad. Genital pore at end of first fifth of proglottid. Testes 70 to 114 iu number. Few coils in cirrus-pouch. Cirrus-pouch about mm. long by mm. broad. Vitellaria with large follicles. Uterus with 25 to 35 lateral pouches on each side. (For structure of mature proglottid consult figure 730, page 425.) Intestine of Amblystoma tigrinum (Green); Nebraska and Kansas. Fig. 740. Ophiotaenia JUarioides. Head of adult, magnified. (After La Rue.) 48 (47) Vagina either anterior or posterior to cirrus-pouch. 49 49 (52) Genital pore anterior to middle of margin of proglottid 50 50 (51) Testes number 90 to 160. Ophiotaenia lonnbergii (Fuhrmann) 1895. Ophiotaenia tSnnbergii. _, . _ proglottid, magaified. (After Fuhrmann.) posterior to it. Vagina never crosses cirrus-pouch. In intestine of Nsciunis macutosus Raf.; Ohio, Indiana. Length 170 to 190 mm., breadth up to mm. Scolex to mm. broad. Suckers measure to mm. long by to mm. broad. First pro- glottids about mm. long by mm. broad; mature proglottids
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfreshwa, bookyear1918
