. Fresh-water biology. Freshwater biology. THE WATER FLEAS (CLADOCERA) 735 233 (232) One to three rather strong teeth, valves reticulated. Alonella dentifera Sars 1901. Back high arched; infero-posteal angle acute, with 1-3 fairly strong teeth. Rostrum reaches nearly to ventral margin of valves. Post-abdomen large, broad, somewhat expanded behind anus; apex rounded; with about 12 minute marginal denticles, and as many very minute lateral fascicles. Claws with I very long basal spine. Color yellow-brown. Length, 5 ca. mm.; ^, mm. Louisiana and Texas; not rare in pools and S>.
. Fresh-water biology. Freshwater biology. THE WATER FLEAS (CLADOCERA) 735 233 (232) One to three rather strong teeth, valves reticulated. Alonella dentifera Sars 1901. Back high arched; infero-posteal angle acute, with 1-3 fairly strong teeth. Rostrum reaches nearly to ventral margin of valves. Post-abdomen large, broad, somewhat expanded behind anus; apex rounded; with about 12 minute marginal denticles, and as many very minute lateral fascicles. Claws with I very long basal spine. Color yellow-brown. Length, 5 ca. mm.; ^, mm. Louisiana and Texas; not rare in pools and S>.l MM Fig. 1159. w4/0»e//a j£n/;/£ra, with dsveloping epbippium. 234 (231) No infero-posteal teeth; form rotund. Alonella glohulosa Daday 1898. Small; shape oval-rotund; head reaching about to middle of valves. Valves striated; all margins rounded and without teeth. Post-abdomen long, narrow; broadest near anus; about 12 minute marginal denticles and as many slender lateral fascicles. Keel of labrum with 2 notches. Color yellow-brown. Length, $, mm. Lake Charles, Louisiana, among weeds. This species is A. sculpta Sars. Fig. 1160. Alonella 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
