137 Surirella splendida/925, 967, 989, 1477, 1521, 1533, 2011, E323, E324 Surirella striatula/1477, E320, E321, E322 Surirella thermalis/E325 Surirella spp./757, 886, 891, 895, 897, 915, 925, 1444, 1477, 1521, 1525, 1781, 1971, 1994, 2062, 2137 Synedra acicularis/E199 Synedra affinis/E326 Synedra americana/E203 Synedra amphirhynchus/E329 Synedra baculus/1470, 1472 Synedra barbatula/E333 Synedra biceps/E331 Synedra capitata/E357 Synedra crystallina/E327, E328 Synedra dissipata/E205 Synedra fasciculata/E332 Synedra fulgens/E330 Synedra gallionii/E335 Synedra gracilis/E334 Synedra hennedyana/1465, 1469, 1470, 1471 Synedra investiens/1024 Synedra lunaris/E336 Synedra minutissima var. pellicu- losa/E340, E341 Synedra parva/E339 Synedra parvula/E356 Synedra pulchella/E337, E338 Synedra radians/E343 Synedra semispina/E346 Synedra spectabilis/980, 990 Synedra splendens/E343 Synedra subtilis/E344 Synedra tabulata/E345 Synedra ulna/1029, E350, E352 Synedra undulata/1003, 1470, 1790 Synedra vaucheriae/E354, E355 Synedra vitrea/2051, E351, E353 Synedra spp./634, 636, 672, 709, 716, 949, 1131, 1133, 1141, 1470, 1477, 1524, 1529 Syringidium americanum/897, 903, 912, 913, 920 Syringidium simplex/893, 913, 920 Syringidium turgidum/921 Syringidium spp./891, 893, 920, 922, 923, 2139 Systephania diadema/1128 Systephania/759, 1129, 1133, 1140, 1529 Tabellaria fenestrata/E358, E379 Tabellaria flocculosa/2020, E360, E362, E378 Tabellaria ventricosa/E363 Terpsinoe muscia/886, 1044, 1477, 1531, 1535, 1874, 1876, 1910, 1915, 1942, 2107, 2108 Terpsinoe spp./885-887, 902, 911, 913, 914, 922, 2137 Tessella catena/673