. Fresh-water biology. Freshwater biology. 28 (29) Natatory setae of the second antenna shortened, no swimmers. Second leg with a beak-like end segment and a claw (Fig. 1268 6) Subfamily Herpetocypridinae . 30 ?9 (28) Natatory setae of the second antenna long, reaching at least to tips of terminal claws. Second leg as above. Subfamily Cypridinae . 42 30(31) Furca abnormal, with three claws, — the usual dorsal seta being replaced by a claw. Shell faintly longitudinally striated (Fig. 1259) Ilyodromus Sars 1894. Only one species known in America. Ilyodromus pectinatus Sharpe 1908. Length to
. Fresh-water biology. Freshwater biology. 28 (29) Natatory setae of the second antenna shortened, no swimmers. Second leg with a beak-like end segment and a claw (Fig. 1268 6) Subfamily Herpetocypridinae . 30 ?9 (28) Natatory setae of the second antenna long, reaching at least to tips of terminal claws. Second leg as above. Subfamily Cypridinae . 42 30(31) Furca abnormal, with three claws, — the usual dorsal seta being replaced by a claw. Shell faintly longitudinally striated (Fig. 1259) Ilyodromus Sars 1894. Only one species known in America. Ilyodromus pectinatus Sharpe 1908. Length to mm. Shell with reticulate patterns anteriorly and posteriorly. • Posterior edge of furca decidedly pectinate. The only known spedes of the genus with a pectinate furca. In ponds and slowly flowing streams, with Typha, Iris, Chara, etc. South Carolina. Fig. IJS9. Ilyodromus pectinatus. (a) Side view, X 4Si (i) Furca, X 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. ]
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfreshwa, bookyear1918
