. Fresh-water biology. Freshwater biology. Fig. 737. Proteocephalus exiguus. a, Head, su, fifth sucker, X 93; b, mature proglottid, X 60 (After La Rue.) 43 (42) Cirrus-pouch less than one-third breadth of proglottid. 44 (45) Testes in one layer. 44 Proteocephalus pinguis La Rue 1911. Strobila short, slender, length up to 90 mm., maximum breadth mm. First proglottids very short. Mature and ripe proglottids nearly quadrate or in a few ripe proglottids length exceed- ing the breadth. Genital pore at or near middle of lateral margin of proglottid. Testes 54 to 70, in a single layer. Cirrus- p
. Fresh-water biology. Freshwater biology. Fig. 737. Proteocephalus exiguus. a, Head, su, fifth sucker, X 93; b, mature proglottid, X 60 (After La Rue.) 43 (42) Cirrus-pouch less than one-third breadth of proglottid. 44 (45) Testes in one layer. 44 Proteocephalus pinguis La Rue 1911. Strobila short, slender, length up to 90 mm., maximum breadth mm. First proglottids very short. Mature and ripe proglottids nearly quadrate or in a few ripe proglottids length exceed- ing the breadth. Genital pore at or near middle of lateral margin of proglottid. Testes 54 to 70, in a single layer. Cirrus- pouch short, stout, to mm. long by to nun. broad, i : 3 or I : 4 in breadth of proglottid. Va- gina anterior, but vaginal opening al- ways dorsal to cirrus-pouch. Vagina crossing iimer end of cirrus-sheath. Uterus with 10 to 14 lateral pouches on either side. In intestine of Esox reticulatus Le Fig 738. Proteocephalus pinguis. a, Head in dorsal or Sueur, and E lucius Lhm., Maine, ventral view, X 4S; b, ripe proglottid, utl, lateral uterine Michigan, and Wisconsm. pouches, ventral view, X 63. (After La Rue.) Proteocephalus pusillus Ward 1910. Very small, weak; length 30 to 50 mm., maximum breadth mm. Proglottids few. First proglottids broader than long, mature proglottids longer than broad, ripe proglottids much longer ( to mm.) than broad ( to mm.) Genital sinus at end of first one-third to two-fifths of proglottid. Testes 44 to 70 in number, in two layers. Coils of vas deferens few, anterior to cirrus-pouch. Vagina never crossing cirrus-pouch. Uterus with 10 to 16 lateral pouches on each side. Habitat: Intestine of Salmo seiago Girard and Cristivomer namaycush Walbaum; Se- bago Lake, Maine, Lake Temagami, Ou-. 4S (44) Testes in two 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 resemb
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfreshwa, bookyear1918
