. Fresh-water biology. Freshwater biology. Eye not filling end of head, pigment small. Color hyaline. Length, S, mm.; J, to mm. Common in open waters of lakes. Fig. 1055. Diaphattosoma leuchtfinbergianum. 13 (10) Spines on post-abdomen 14 14 (17) Eye dorsal, far from insertion of antennule and optic ganghon. No rostrum Latonopsis Sars 1888 . 15 No tongue-shaped process on ventral side of head, or antennary expansion. Otherwise much like Latona parviremis. Posterior margin of valves with very long setae (often lost). $ with long antennule, copulatory organ, and hook on first foot. 1
. Fresh-water biology. Freshwater biology. Eye not filling end of head, pigment small. Color hyaline. Length, S, mm.; J, to mm. Common in open waters of lakes. Fig. 1055. Diaphattosoma leuchtfinbergianum. 13 (10) Spines on post-abdomen 14 14 (17) Eye dorsal, far from insertion of antennule and optic ganghon. No rostrum Latonopsis Sars 1888 . 15 No tongue-shaped process on ventral side of head, or antennary expansion. Otherwise much like Latona parviremis. Posterior margin of valves with very long setae (often lost). $ with long antennule, copulatory organ, and hook on first foot. 15 (16) Shell gland drawn out into very long posterior loop. Latonopsis occidentalis Birge 1891. Post-abdomen with about 9 small anal spines. Color yellowish-trans- parent. Length, ?, to mm.; J', ca. mm. New England to Colorado and Texas; in weedy pools and lakes. '-1 %.. MM. 1 '^'rr^ll; \\\\\ Figs. 1056,10S7,6. Latonopsis occidenlalis. (, Vi\ ^ (See also Fig. 1057.). 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
