. Fresh-water biology. Freshwater biology. MM, 19s (194) Supero-posteal angle overhanging; infero-posteal angle rounded, with small tooth in front of at MM. Pleuroxus striatus Schoedler 1863. General shape much like P. hastatus but never so high arched as this may be. Valves obviously striated. Post-abdomen long, slender, with 20, or more, marginal denticles. Color dark, especially opaque on dorsal side, often nearly black. Length, 9,ca. ; cT, ca. min. In all parts of United States; common among weeds. This species is P. gracilis Hudendorf; P. unidens Birge. Fig. 1140. Pleur
. Fresh-water biology. Freshwater biology. MM, 19s (194) Supero-posteal angle overhanging; infero-posteal angle rounded, with small tooth in front of at MM. Pleuroxus striatus Schoedler 1863. General shape much like P. hastatus but never so high arched as this may be. Valves obviously striated. Post-abdomen long, slender, with 20, or more, marginal denticles. Color dark, especially opaque on dorsal side, often nearly black. Length, 9,ca. ; cT, ca. min. In all parts of United States; common among weeds. This species is P. gracilis Hudendorf; P. unidens Birge. Fig. 1140. Pleuroxus 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
