380 



Illinois Natural History Survey Bulletin 



Vol. 28, Art. 2 



N 

 natalis, Ameiunis, 324 

 Tidtalis. litalunis. 324, 327, 328, 335, 336, 344, 



345, 346, 369 

 nebulosus, Icialurus, 324, 327, 330 

 n'ujrr, Ictiohiis. 322, 329, 330, 333 

 ni(/ri( cms, Catnstomus, 321 

 mgrhans. Hypnitrliiiin. 321, 328, 331, 332, 333, 



336, 338, 343, 345, 363 

 nigromaculatus, Pomoxis, 326, 329, 332 

 tiKirum, Bolrosoma, 326 

 n'u/nim, Etiieostoma, 326, 328. 329, 336, 345, 



374 

 noctiintus. A'otunis, 324, 327, 330 

 Northern hog sucker, 321 

 Northern redhorse, 322 

 notatus. Fundulns. 325, 328, 329, 335, 336, 345, 



370 

 notatus, Pimiphtih's, 324, 327, 328, 335, 336, 



343, 368 

 Notemit/nnus crysoleitcas, 323, 327, 328, 336, 



338, 344, 365 

 Nntrn[>is 



amnis. 323, 329, 330, 333, 354 



/ithcrinoidcs, 323, 328, 329, 331, 332 



atripes. 323 



atrocaiidalis, 323 



blcnnius, 323, 324, 329 



hoops, 323, 328, 330, 332, 333 



cayuga, 323 



chrysoccphalus, 323, 328, 332, 333, 33 5, 338, 



339, 343, 345, 358, 366 

 cornutus, 323 

 cyanoceplialtts, 323 

 deliciosus, 323 



dors/ills, 323, 327, 328, 331, 332, 335, 336, 337, 



338, 343, 358, 366 

 gilherti, 323 



'//etrrolrpis, 323, 327, 328, 329, 330, 332, 333 

 liypsisomatus, 323 

 Ulcichrosns, 323 

 lutrensis, 323, 327, 330, 331, 332, 333, 336, 



343, 366 

 nihellus, 323, 327, 329, 331, 332, 336, 343, 366 

 spiloptcrus. 323, 327, 329, 335, 343, 345, 367 

 spUoptnus X liypsisomatus, 323 

 stramineus, 323, 327, 329, 335, 343, 345, 367 

 umhralUis, 323, 327, 328, 331, 332, 336, 338, 



343, 345, 367 

 voluccllus, 324, 329 

 luhipplei, 324, 329, 336, 343, 367 

 nv/iipplii, 323, 324, 329 

 Noturus 



exilis, 324, 327, 329, 330, 333 



fla-vus. 324, 329, 332, 333, 336, 337, 344, 



369 

 gyrinus, 324, 329, 336, 344, 345, 370 

 m'turus, 324, 327, 329, 336, 344, 370 

 nocturnus, 324, 327, 330 

 nuchalis, Uybognatlius, 322, 328, 330, 336, 343, 



346, 365 

 Nuphar ad-vejia, 313 



O 



oblongus, Erimyzon, 321, 327, 328, 335, 336, 



338, 343, 345, 358, 363 

 olivaris, Leptops, 324 



olivaris, Pylodictis. 324, 329, 331, 332, 336, 344 

 Opsoparodus mrgalops, 328 

 Opsopoeodus emiliae, 324, 328, 330, 332, 333 



Orangespotted siinfish, 325, 357 

 Orangethroat darter, 326 

 ossrus, Lcpisostrus, 321, 330 

 Oxbow(s), 311, 317 



Pallid shiner, 323 



pallidas, Lepomis, 325 



pcllucida, Ammoaypta, 326, 329, 336, 337, 373 



Percina 



caprodrs, 327, 328, 329, 336, 345, 375 



laprodrs X scmifasciata, 327 



maculata, 327, 329, 336, 345, 375 



phoxoccphala, 127, 329, 336, 345, 375 



sciera, 111, 330 



semijasciata. 111 

 prrspicuus, Pimcplialrs, 324 

 Phcnacohius mirabilis, 324, 328, 335, 336, 338, 



344, 358, 368 

 Phinney Branch, 349, 352, 356, 359 

 phoxocephala, Percina, 111, 329, 336, 345, 375 

 phoxoceplialus, Uadropterus, 'ill 

 Phyla lauK'olata, 313 

 Pickerel, grass, 321, 347, 350 

 Pimepliales 



notatus, 324, 327, 328, 335, 336, 343, 368 



perspicuus, llA- 



promclas, 324, 328, 336, 343, 363 



figilax, 324, 328, 330, 332, 333 

 Pirateperch, 325 

 Plankton (blooms), 354 

 Polluted waters, chemistry of, 353 ; see also 



Water chemistry, Pollution (pollutants) 

 Pollution (pollutants) ; see also \^'ater chem- 

 istry', Water (stream) enrichment, Sewage, 

 Fish distribution (occurrence), Fish abun- 

 dance (weights, numbers) 



areas of chronic, 348, 353, 359 



chemical, 346, 348 



definition of, 346 



domestic, 312, 346, 348, 352 



fish tolerant of, 331, 351, 354-5 



industrial, 312, 347, 348, 350, 352 



organic, 346 



types of, 346-8, 359 

 Pomoxis 



annularis, 326, 329, 336, 344, 373 



nigromaculatus, 326, 329, 332 



sparoides, 326 

 Pond(s), 317, 328, 356, 357, 359 

 Potamogeton 



foliosus, 313 



spp., 313 

 Precipitation, 307, 310, 317 

 promelas, Pimepliales, 324, 328, 336, 343, 368 

 Pugnose minnow, 324 

 pullum, Campostoma, 322 

 punctatus, Ictalurus, 324, 328, 344, 369 

 punctatus, Lepomis, 325, 327, 329, 330, 333 

 punctulatus, Micropterus, 326, 327, 329, 336, 



344, 346, 372 

 Pylodictis olivaris, 324, 329, 331, 332, 336, 344 



Quillback, 347, 352, 357 

 Quillback carpsucker, 321 



R 



Ragweeds, 313 

 Rainbow darter, 326 



