IIOO 



INDEX 



flagella, 238, key, 243-270, methods of 

 study, 242, pseudopodia, 238, physiologi- 

 cal processes, 241, references, 300, repro- 

 duction, 241, structure, 238; see Protozoa 



Mastogloia, 128; smithii, 128 



Matter, cycle of, 207 



Matus (adult), 942 



Mayflies, aquatic; see Ephemerida; Insecta 



Mazocraes, 37s 



Meadow, aquatic, 197 



Medionidus, 1015: conradicus, 1015 



Mediorhynchus, 549 



Medusae of Hydrozoa, 318 



Megadistotnum, 392 



Megalotrocha, 617; alboflavicans, 611, 617 



Megalurous cercariae, 416 



Megarhinus (larva), 944 



Melampinae, 978 



Melampus, 978; bidentata, 979, bidloides, 979, 

 hemphilU, 979, linealiis, 978; s. s., 978 



Melicerta, 615; ringens, 575, 615 



MeUcertida, 574, 611 



Melicertidae, 615 



Melosira, 126; varians, 126 



Melosiraceae, 126 



Menoidium, 255; pellucidum, 235 



Meridion, 132; consiriclum, 132 



Meridionaceae, 132 



Merismopedia, 105; elegans, 105 



Mermis, 505 



Mermithidae, 503, 510, 534 



Meromyaria, 515 



Mesenchytraeus, 642 



Mesocarpeae, 142 



Mesocestoides, 440 



Mesocestoididae, 440 



Mesodinium, 272; pulex, 272 



Mesomermis, 503; virginiana, 503 



Mesostoma, 352; ehrenbergii, 352, patter soni, 

 361, 362, vividatum, 350, viviparum, 350 



Mesostomatini, 351 



Mesotaenium, 138; endlicherianum, 138 



Mesothemis (imago), 927, (nymph), 931 



Metabolism, temperature vs., 33 



Metanema, 257 



Metastrongylinae, 522 



Methods of Collecting, 61-83; bottom, 70, by 

 pyramid dredge, 71, by runner net, 70, by 

 triangle dredge, 71; fish, 61, by fyke net, 

 631 by gill net, 64, by net, 61-66, by seine, 

 61, by trammel, 62, by trap, 65, by turtle 

 net, 66; invertebrates, in littoral vegetation, 

 67, by Birge net, 68, by cone dredge, 68, by 

 dip net, 67, by grapple, 68, by plankton 

 pump, 70; in open water, qualitative, 72, 

 by plankton cylinders, 73, by townet, 72; 

 in open water, quantitative, 74, by clock 

 pump, 80, by closable plankton net, 77, 

 78, by plankton pump, 78, by quantita- 

 tive plankton net, 74, by thresher tank- 



pump, 80, by water-bottle, 80; references, 

 88-89; special methods, 85 



Methods of Photographing, 86-88; under- 

 water, 86, by screen, 86, through water 

 glass, 87; references, 88-89 



Metopidia, 597; ehrenbergii, 597 



Metopus, 284; sigmoides, 284 



Metorchis, 393; complexus, 393 



Metriocnemus (larva), 945 



Meyeninae, 308 



Micrasterias, 140; papillifera, 140 



Micrathyria (imago), 927 



Microcercous cercariae, 419 



Microclilamys, 221; patella, 221 



Microcodides, 609; robustus, 609 



Microcodon, 609; davus, 609 



Microcoleus, 109; delicatulus, 109 



Microcotylae, cercariae, 416 



Microcotyle, 375 



Microcotylidae, 375 



Microcystis, 105 



Microdina, 619; paradoxa, 577, 619 



Microdinidae, 619 



Microdonidae, 609 



Microgromia, 233; socialis, 233 



Microhydra, 318, 319, 322; ryderi, 322; see 

 Hydrozoa 



Microlaimus, 491; fluviatUis, 491 



Microorganism, anaerobic, 94 



Microphalhnae, 401 



Microphallus, 401; opacus, 370, 401 



Microspora, 164; amaena, 164 



Microstomidae, 337 



Microstominae, 337 



Microstomum, 337; caudatum, 338, lineare, 

 337, phUadelphicum, 361, variable, 361 



Microthamnion, 170; kiitzingianum, 170 



Microthorax, 283; stdcatus, 283 



Micro-trichoptera, 901 



Mideopsis, 865; orbicularis, 865 



Midges; see Chironomidae; Insecta 



Migrations, daily depth, 32, light vs., 31 



Mimodistomiun, 392 



Miracidium, 371 



Mischococcus, 148; confermcola, 148 



Mochlonyx (larva), 944 



Moina, 703; affinis, 705, brachiata, 704, 

 JlagcUata, 705, macrocopa, 705, micrura, 

 704, paradoxa, 70s, recliroslris, 705 



Moinodaphnia, 703; alabamensis, 703, mac- 

 leayii, 703 



Molannidae, 936 



MoUusca, Fresh and Brackish-water, 18, 937- 

 1020; classification, 970, collection and 

 preparation of specimens, 960, distribution, 

 959, jaws and lingual membrane, 968, key, 

 977-1020, measurement and descriptive 

 • terms, 969, radula, 973, references, 1020; 

 see Gastropoda; Lamellibranchia 



Monadida, 243 



