. Fresh-water biology. Freshwater biology. COPEPODA 759 19 (18) Inner process of terminal segment of left exopodite of male fifth foot digitiform, hyaline appendage on internal distal angle of first segment of right exopodite 20 20 (21) Lateral spine of second segment of right exopodite nearly straight, no blunt spine on posterior surface of this segment. Diaptomus tyrelli Poppe 1888. Widely spread in the mountain lakes of the West. Length of female, mm. Length of male, mm. Fig. 1181. Fifth feet of male Diaptomus tyrelli. X 190. (Original.). 21 (20) A second hyaline appendage on dorsa
. Fresh-water biology. Freshwater biology. COPEPODA 759 19 (18) Inner process of terminal segment of left exopodite of male fifth foot digitiform, hyaline appendage on internal distal angle of first segment of right exopodite 20 20 (21) Lateral spine of second segment of right exopodite nearly straight, no blunt spine on posterior surface of this segment. Diaptomus tyrelli Poppe 1888. Widely spread in the mountain lakes of the West. Length of female, mm. Length of male, mm. Fig. 1181. Fifth feet of male Diaptomus tyrelli. X 190. (Original.). 21 (20) A second hyaline appendage on dorsal side of distal margin of first segment of right exopodite, lateral spine of second segment of right exopodite strongly curved, and a blunt spine on posterior surface of this segment. Diaptomus coloradensis Marsh 1911. In the Rocky Mountains in Colorado D. tyrelli is replaced by this closely allied species which is, apparently, the characteristic species of the moun- tain lakes of Colorado. Length of female, mm. Length of male, mm. Fig. 11S2. "FiiXhifxtoiixidXa DiaptDltms coloradensis. X 120. (Original.) 22 (9) Antepenultimate segment of male right antenna with lateral lamella or terminal process 23 23 (a6, 42) Antepenultimate segment of right antenna of male with hyaline lamella 24. 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
