INDEX 



1099 



Leptoceridae, 936 



Leptodora, 739; kindtii, 739 



Leptodoridae, 739 



Leptomonas, 246 



Leptophlebia (imago), 919, (nymph), 921 



Leptorhynchus dentifer, 736 



Leptozosma, 135; catenulata, 135 



Lepyrium, 994; showalteri, 994 



Lcrnacidae, 7 84; see Copepoda 



Lernaeopodidae, 784; see Copepoda 



Lestes (imago), 923, (nymph), 891, 928 



Leuceruthrus, 392, 407; micro ptcri, 392 



Leucochloridium, 409, 423 



Leucophrys, 278; patula, 278 



Leucorhinia (imago), 927, (nymph), 932 



Leydigia, 721; acanthocercoides, 721, quadran- 

 gular is, 721 



Libellula (imago), 927, (nymph), 931, 932 



Lieberkiihnia, 233; wageneri, 233 



Life, distribution of, 35; see Existence, con- 

 ditions of 



Life, Fresh-water; see Biology, Fresh-water 



Light, intensity of, 32, penetration in water of, 

 29, 30, vs. migration, 31 



Ligula, 431 



Ligulinae, 431 



Limnadia, 673; americana, 673, coriacea, 



673 

 Limnadiidae, 673 

 Limnebius (adult), 939 

 Limnesia, 87c; histrionica, 870 

 Limnesiopsis, 869; anomala, 869 

 Limnetic region, 4 

 Limnetidae, 672 

 Limnetis, 672; brevifrons, 672, gouldii, 672, 



gracilicornis, 672, mucronatiis, 762 

 Limnias, 615; ceratophylli, 615 

 Limnicy there, 806; illinoisensis , 807, reticu- 

 lata, 806 

 Limtiocalanus macrurus, 774 

 Limnochares, 859; aquaticus, 859 

 Limnocharidae, 859 

 Limnocnida, 322; indica, 322, rhodesia, 322, 



tanganyicae, 322; see Hydrozoa 

 Limnodrilus, 641; claparedianiis, 641, gracilis 



641 

 Limnology, i; lakes, 2, 4, 5, limnetic region, 



4, Httoral region, 4, ponds, 2, pools, 3, 



shore zone, 3 

 Limnomermis, 505 

 LimnophiUdae, 936, 937 

 Limnoplankton, 6; see Plankton 

 Lionotopsis, 275; anser, 275 

 Lionotus, 276; wrzesniowskii, 276 

 Lioplax, 988; subcarinala, 988 

 Liporhynchia, 340, 361 

 Liriola, 980 

 Lissoflagellata, 243 



Lithasia, 992; armigera, 992, geniculata, 992 

 Littoral region, 4 



Liltoridina, 990; monroensis, 990 



L<jp)h()phure, 947 



LophopHs cristiiilinus, 954 



Loricalina, 591 



Loxocephalus, 2H0; granulosus, 280 



Ixjxodes, 274; rostrum, 274 



Loxogcncs, 400; arcanum, 400 



L()xoi)h>lium, 27s; rostralum, 275 



Lucius vcrmiculatus, 103 1 



Luml)rii illiis, i'y\2; ruiUus, 642 



Lun\l)riiulidac, 642 



Lumbriculus, ^42; inconstans, 642 



Lutrochus (adult), 942 



Lycastoides alticola, 632 



Lychnothamnus, 174 



Lymnaca, 980; auricularia, 981. columella. 

 gSi, haldcmani, 981, megasoma, 980, obrussa, 

 982, palustris, 981, stagnalis, 980, utahensis 

 981, s. s., 980 



Lymnaeidae, 980 



Lyngbya, 108; major, 108 



Lyngbyeae, 107 



Lyogyrinac, 991 



Lyogyrus, 99 1 ; pupoidt us, c)gi 



Lysianassidae, 842 



Lythoglyphinae, 990 



Macrobdella, 65(1; decora, 656, seslertia. 656 



Macromia (imago), 925, (nymph), 930 



Macronychus (adult), 942 



Macrostominae, 338 



Macrostomum, 33S; appendiculatum, 338, 

 hystrix, 338, scnsitivum, 339 



Macrothricidac, 708 



Macrothrix, 713; horysthrnica, 715, eUgans, 

 715, hirsuticontis, 714, laticornis, 714, mon- 

 tana, 714, rosea, 715, ttnuicornis, 715 



Malacostraca (Higher Crustacea), 828-850; 

 cave species, 837, development. 832, habi- 

 tat, 83s, key, 841-850. mcthtxi of study, 

 840, occurrence, 828, references. 850, struc- 

 ture, 830; see Crustacea 



Mallomonas, 260 



Mammals, a(iuatir, 1022-1024: references, 

 io6'>; srr \\Ttcl)rata 



Man the modifying agent in fresh-water life, 

 1 1 



Manayunkia speciosa, 632 



Mancasellus. 841 



Margaritana, 995; margaritiiera, 995 



Margarilanidae, 995 



Marionina jorlnsac, 642 



Marl and marl lakes, aquatic plants factors 

 in ft)rmation of. 207 



Marshia. 7S0; aibuqurrqurnsis, 780, brevkau- 

 data, 780 



Mastax. 55S. 560 



Mastigamoeba. 243: lotigi/ilum, 3a\ 



Mastigophora (Flagellate Trotuzoa). Fresh- 

 water, 14, 238-270, 300: conjugation, 342, 



