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, 375 

 Meadow, aquatic, 197 

 Medionidus, 1015; conradicus, 1015 

 Mediorhynchus, 549 

 Medusae of Hydrozoa, 318 

 Megadistomvun, 392 



Megalotrocha, 617; alboflavicans, 611, 617 

 Megalurous cercariae, 416 

 Megarhinus (larva), 944 

 Melampinae, 978 

 Melampus, 978; hidentata, 979, bulloides, 979. 



hemphilli, 979, Uneatus, 978; s. s., 978 

 Melicerta, 615; ringens, 57s, 615 

 Mehcertida, 574, 611 

 Melicertidae, 615 

 Melosira, 126; varians, 126 

 Melosiraceae, 126 

 Menoidium, 255; pellucidum, 255 

 Meridion, 132; constrictum, 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; pvlex, 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 

 MetaboUsm, temperature vs., 33 

 Metanema, 257 

 Metastrongylinae, 522 



Methods of Collecting, 61-85; bottom, 70, by 

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

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

 63, 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, quaUtative, 72, 

 by plankton cyUnders, 73, by townet, 72; 

 in open water, quantitative. 74. by clock 

 pvunp, 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 

 Microchlamys, 221; patella, 221 

 Microcodides, 609; robustus, 609 

 Microcodon, 609; claviis, 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; fluviatilis, 491 

 Microorganism, anaerobic, 94 

 Microphalhnae, 401 

 Microphallus, 401; opaciis, 370, 401 

 Microspora, 164; amaena, 164 

 Microstomidae, 337 

 Microstominae, 337 

 Microstomum, 337; caudatum, 338, lineare, 



337, philadelphicum, 361, variable, 361 

 Microthamnion, 170; kiitzingianum, 170 

 Microthorax, 283; sulcatus, 283 

 Micro-trichoptera, 901 

 Mideopsis, 865; orbicularis, 865 

 Midges; see Chironomidae; Insecta 

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

 Mimodistomum, 392 

 Miracidium, 371 



Mischococcus, 148; confervicola, 148 

 Mochlonyx (larva), 944 



Moina, 703; affi,nis, 70S, brachiata,^ 704, 

 flagellata, 705, macrocopa, 705, micrura, 

 704, paradoxa, 705, rectirostris, 705 

 Moinodaphnia, 703; alabamensis, 703, in<ic- 



leayii, 703 

 Molannidae, 936 



MoUusca, Fresh and Brackish-water, 18, 957- 

 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 



