. Fresh-water biology. Freshwater biology. Fig. 846. Neoechinorhynchus emydis. Proboscis, X 75; hooks and embryos, X 230. (After Van Cleave.) Body much elongated, cylindrical. Female 10 to 32 mm. long, mm. in maximum width. Male 8 to 11 mm. long by mm. broad. Proboscis globose, mm. long. Hooks large, in anterior row strongly recurved, 95 to 103 li long, in middle row 49 to 59 li long, in basal row 35 to 54 /j long, nearly straight. Embryos very small, oval, 16 by 11 M. Originally described by Leidy from the in- testine of various species of Emys from Pennsylvania and Maryland. Fr
. Fresh-water biology. Freshwater biology. Fig. 846. Neoechinorhynchus emydis. Proboscis, X 75; hooks and embryos, X 230. (After Van Cleave.) Body much elongated, cylindrical. Female 10 to 32 mm. long, mm. in maximum width. Male 8 to 11 mm. long by mm. broad. Proboscis globose, mm. long. Hooks large, in anterior row strongly recurved, 95 to 103 li long, in middle row 49 to 59 li long, in basal row 35 to 54 /j long, nearly straight. Embryos very small, oval, 16 by 11 M. Originally described by Leidy from the in- testine of various species of Emys from Pennsylvania and Maryland. Frequent in Malacoclemmys geographicus (Lesueur) and Pseudemys elegans Max from the Illinois River. (6) Body 2 to 13 mm. long. Embryos about 40 m long. Neoechinorhynchus tenellus (Van Cleave) Fig. 847. Neoechinorhynchus tenellus. Proboscis, X 7%; hoolts and embryo, X 230. (After Van Cleave.) Body small, both ends curved strongly ventrad. Posterior two-thirds of body markedly attenuated. Female to 13 mm. long, mm. in maximtim breadth; males 2 to 8 mm. long, mm. broad. Pro- boscis nearly cylindrical, mm. long by mm. wide. Anterior hooks 90 to no /i long, heavy; middle hooks 38 11 long; basal hooks 27 ix. long. Embryos 37 to 45 by 12 to 16 )Li. Intestine of Esox lucius L. from Lake Marquette near Bemidji, Minnesota. 8 (5) Terminal hooks usually less than 90 m long. Embryos over 50 m long. Neoechinorhynchus cylindratus (Van Cleave) 1913. Large, straight-bodied. Female 10 to 15 mm. long, mm. in maximum width, just behind proboscis. Male to mm. long, to mm. in maximum breadth near anterior end. Proboscis slightly broader ( mm.) than long ( mm.). Anterior hooks 79 to 97 /i long, heavy, strongly recurved, center hooks 37 M long, basal hooks 21 to 25 ;u long. Em- bryos 49 tosin long by 15 to 21 M broad. In intestine of Micropterus salamoides (La- c6p.). Pelican Lake, Minnesota, and of An- guUla ckrysypa, Woods Hole, Massachusetts
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfreshwa, bookyear1918
