INDEX 635 
Proserpinaca palustris, 237. 
Protophyta, 263 (table). 
Protozoa, 256, 263 (table), 296, 5109. 
Pterodina patina, 297. 
Q 
Quercus palustris, 108. 
R 
Ranatra, 18. 
Ranunculus multifidus, 237. 
Rhabdoceela, 297. 
Rhizopoda, 263 (table), 500, 513, 516, 517, 
518, 519, 530, 532, 533, 535, 555 
564, 614. 
Rhizota, 5109. 
Rhyacophila, 47. 
Rhynchospora alba, 241. 
Rotatoria, 530, 534, 615. 
Rotifer actinurus, 516. 
tardus, 297. 
Rotifera, 256, 257, 263 (table), 297, 461, 
500, 516, 517, 519, 535, 536, 564. 
Ss 
Sagittaria, 88, 249, 383, 385, 4o4. 
variabilis, 237, 240, 242. 
Salix longifolia, 245, 266. 
nigra, 108, 245, 266. 
Schizophycez, 510. 
Scirpus, 251, 495, 592. 
atrovirens, 241. 
fluviatilis, 237, 241, 246, 249, 383. 
lacustris, 241, 246, 
pungens, 241. 
smithii, 241. 
Silurida, 564. 
Sium cicutefolium, 238. 
Somatochlora., 9, 14, 16. 
Sparganium eurycarpum, 88, 239. 
Spirodela, 152, 241. 
polyrrhiza, 239, 242. 
Spirogyra, 241, 245, 415. 
Stratiomyiide, 47. 
Stylurus, 83. 
Suctoria, 519. 
Surirella, 518, 537. 
ovata, 516. 
splendida, 516, 537. 
Sympetrum, 5, 10, II, 13, 15, 16, 17. 
Syncheta, 256, 263 (table ), 273, 493, 518. 
Synedra, 225, 532. 
acus, 513, 516. 
ulna, 516. 
Synthemine, 5, 6, 14, 16. 
Synura, 256, 263 (table ), 273, 518, 555. 
uvella, 385, 516. 
Tr 
Tachopteryx thoreyi, 63. 
Tanypus, 536. 
Tetrageneuria, 16. 
Tipula, 47. 
Trachelomonas, 225, 341, 518. 
hispida, 516. 
Tramea, 5, 6, 8, 12, 13, 15, 16. 
lac rta, 7, 9, 48. 
Triglochin palustris, 240. 
Trinema enchelys, 516. 
Trochospheera, 383, 391. 
Typha latifolia, 239. 
U 
Ulmus americana, 108. 
Umbellifera, 244. 
Unionide, 196, 266. 
Uropetala thoreyi, 63. 
Utricularia vulgaris, 238. 
Vi 
Vallisneria spiralis, 239, 244. 
Volvocide, 95. 
Volvox, 500. 
Ww 
Wolffia, 152, 240, 286, 580, 591, 594. 
braziliensis, 240, 242. 
columbiana, 239, 242. 
Z 
Zizania aquatica, 241. 
Zygnema, 241, 245, 415. 
Zygoptera, 3, 4, 5, 6, 8, 9, 11, 12, 22,25, 26. 
