INDEX 



109 1 



Coela:rf . *ceae, 158 



Coelastrum, 159; sphaericum, 159 



Coelenttrata, 15, 301, 316; see Hydrozoa 



Coelhelm"nthes, 16; see Annelida 



Coelosphav rium, 105; kutzingianum, 105, 

 106 



Colacium, 25. : steinii, 251 



Coleochaetacea,% 171 



Coleochaete, 171, scutla, 171 



Coleoptera (beetles), 904-909; key, 917, 

 adults, 937-942, larvae, 943. whirligig 

 beetles, 906; see Ini.'^cta 



Coleps, 271; hirtus, 271 



Collecting, methods of; see Methods of Col- 

 lecting 



Collodictyon, 250 



Collyriclidae, 383 



CoUyriclum, 383; colei, 384 



Coloburus, 920 



Colorus, 597; grallator, 597 



Colpidium, 278; striatum, 278 



Colpoda, 278; campyla, 278 



Coluridae, 568, 59s 



Colurus, 597; grallator, 597 



Colymbetes, 942 



Communities, animal, 51; adaptations, 1022, 

 associations, 57, balance, 54, classification, 

 55, consocies, 56, creek, 58, formations, 57, 

 lake, 58, mores 56, rapids, 52, river, 58, 

 strata, 56, stream, 57 



Conchostraca, 672 



Conditions of Existence; see Existence, Con- 

 ditions of 



Condylostoma, 284; patens, 284 



Cone dredge, 68 



Confervales, 160 



Congeria, 1018; leucophaeata, 1018 



Conjugales, 134 



Conjugation in Infusoria, 242, in Mastigo- 

 phora, 242, in Sarcodina, 217 



Conochiloides, 617, natans, 617 



Conochilus, 617; unicornis, 617 



Contamination, bacillus coli as index of, 1069 



Contracoecum, 533; adunca, 533* spiculi- 

 gerum, 533 



Copelatus (adult), 942 



Copepoda, Fresh- Water, 741-789; develop- 

 ment, 745, distribution, 741, 746, vertical, 

 749, keys, 755-782, 784-786, 787-788, meth- 

 ods of study, 753, 754. occurrence, 745. ref- 

 erences, 788-789, structure, 742, vertical 

 distribution, 749; 5<?e Argulidae; Crustacea; 

 Ergasilidae; Gnathostomata; Siphonosto- 

 mata 



Copeus, 591; pachyurus, 556, 565. S9i 



Coptotomus (adult), 942; interrogates (adult), 

 938, (larva), 909 



Corallobothrium, 439 



Cordulegaster (imago), 924, (nymph), 930 



Cordulia (imago), 926, (nymph), 931 



Cordylophora, 319, 320, 321; colony, 318; la- 

 CHstris, 321; see Hydrozoa 



Corethra (larva), 945 



Corethrella (larva), 944 



Corixidae, 934 



Corona, 554 



Corycia, 221; flava, 221 



Corydalis (adult), 935, (larva), 936 



Corynoneura (larva), 945 



Corynosoma, 549 



Corythion, 232; dubium, 232 



Coscinodiscaceae, 126 



Coscinodiscus, 126; apiculatus, 12G 



Cosmarium, 138, 140; bolrylis, 140 



Cosmocladium, 150; saxonicum, 140 



Cothurnia, 297, plcctostyla, 297 



Cottus ictalops, 1037 



Cotylaapis, 380; cokcri, 380, insignis, 380 



Cotylocercous cercariae, 419 



Cotylogaster, 381; occidentalis, 381 



Crabs, 828; see Malacostraca 



Crangonyx, 843 



Craspedacusta, 318, 322; kawaii, 322, sowerbyi, 

 322; see Hydrozoa 



Crawfishes, 828; see Malacostraca 



Crayfishes, 828; see Malacostraca 



Creniphilus (adult), 940 



Crenodonta, 996 



Crepidostomum, 395; cornutum, 395 



Cricotopus (larva), 945 



Cristatella idae, 955, lacustris, 955. mucedo, 

 947, 955, ophidea, 955 



Crucigenia, 159; apiculata, 159 



Crustacea, 17; jrr CUidocera; Copepoda; Ma- 

 lacostraca; Ostracoda; Phyllopoda 



Crustacea, Higher; see Malacostraca 



Cryptodifflugia, 22S; oviformis, 228 



Cryptoglena, 253; pigra, 253 



Cryptogoniminae, 397 



Cryptogonimus, 381, 391. 398; chyli, 39S 



Cryptomonas, 261; ovata, 261 



Cr>'ptonchus, 492; nudus, 492 



Ctedoctema. 282; acanthocrypta, 282 



Ctenopoda, 689 



Cucullanidae, 529 



CucuUanus, 528, 530; cliicllarius. 530. clegans, 



517 

 Cucurbitella. 225; mcspUiformis, 225 

 Culex (larva), 944 

 Culicidae (larva), 944 

 Currents in water, influence of, 28 

 Cyanophyceac; sec Algae, Blue-Green 

 Cyanophycin granules, 102 

 Cyathocephalinac. 433 

 Cyathocephalus, 433: truncatus, 433 

 Cyathocotyle, 409 

 Cyathomonas, 260; truncala, 260 

 Cybister (adult), 941 

 Cyclanura, 253; orbiculata, 253 

 Cycle of matter, 207 



