. Fresh-water biology. Freshwater biology. 8i8 FRESH-WATER BIOLOGY 70 (71) Shell thin, and dirty to ocherous yellow. Cypris (Cypris) iestudinaria Sharpe 1897, Length mm., height mm., width mm. Natatory setae just reach tips of terminal claws. Terminal claw of first leg one-sixth longer than the last three segments. Terminal claw of second leg one-third as long as terminal segment. Furca slightly curved, its dorsal edge ser- rate two-thirds its length, and sixteen to eighteen times as long as wide. Dorsal seta two-thirds as long as terminal one, and width of ramus from subtermina
. Fresh-water biology. Freshwater biology. 8i8 FRESH-WATER BIOLOGY 70 (71) Shell thin, and dirty to ocherous yellow. Cypris (Cypris) iestudinaria Sharpe 1897, Length mm., height mm., width mm. Natatory setae just reach tips of terminal claws. Terminal claw of first leg one-sixth longer than the last three segments. Terminal claw of second leg one-third as long as terminal segment. Furca slightly curved, its dorsal edge ser- rate two-thirds its length, and sixteen to eighteen times as long as wide. Dorsal seta two-thirds as long as terminal one, and width of ramus from subterminal claw. Terminal seta fully one-half as long as the terminal claw. Ejaculatory duct five times as long as wide, with spines thickly set over the entire surface (Fig. 1277 c), instead of in wreaths, as is common. Ponds in woods. Fig. 1277. Cypris (Cypris) Iestudinaria. (o) Furca; (6) First leg; (c) Part of ejaculatory duct of male, and origin of vas deferens. 71 (70) Shell dark green to chestnut brown with transverse lighter patches dor- solaterally (Fig. 1278 a-h). Cypris {Cypris) fuscata Jurine 1820. Length mm., height to mm., width to mm. Right shell overlaps left. Sparsely hairy. Terminal claws of first leg less than one-third longer than the last three segments. Furca weakly S-shaped to nearly straight, and from eighteen to twenty times as long as wide. Terminal seta of furca weak, not more than one- third as long as terminal claw; dorsal seta less than width of furca from subterminal claw and about one-half as long as the terminal seta. Sexual. Common everywhere in shallow, grassy ponds and swamps; April to June. Fig. 1278. Cypris (Cypris) fuscata. (a) Variety major, dorsal view, X 20; (5) Variety minor, dorsal view; (c) Side view variety major; (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 ma
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfreshwa, bookyear1918
