INDEX 



Craspedacusta, 115 



Crawlers, 243 



Crayfish, 8, 33, 36, 159, 160, 

 172-174, 226, 342; aquar- 

 ium study, 173-174; pre- 

 serving, 41 



Cresses, 95-96 



Crickets, 142 



Cristatella, 133, 134; mucedo, 



CristatellidcB, 137-138 



CrucifercB (mustards and 

 cresses), 95-96 



Crustacea (crustaceans), 158- 

 174; key to orders, 1 60-1 61 ; 

 Amphipoda, 161, 169-171; 

 Branchiopoda, 160, 161- 

 163; Cladocera, 160, 164- 

 165; Copepoda, 160, 166- 

 167, Decapoda, 161, 172- 

 174; Entomostraca, 160, 

 161-168; Isopoda, 161, 171- 

 172; Malacostraca, 160, 

 168-174; Ostracoda, 161, 

 168; Phyllopoda, 160, 161- 



165 

 Crustaceans, 22, 31, 34, 48, 



50, 57, 100, 103, 117, 146, 

 158-174, 215, 226, 257; as 

 food, 17, 238; associates, 

 162; copepods, 166-167; 

 crayfish, 172-174; fairy 

 shrimps, 1 61-163; food, 

 162; form and habits, 158- 

 159, 162; identification, 

 1 59-1 61; in plankton, 17; 

 in transient ponds, 1 1 ; os- 

 tracods, 168; preserving, 

 41 ; relation to food content 

 of water, 9, 13, 17; repro- 

 ductive capacity, 19; scuds, 

 169-171; sow-bugs, 171- 

 172; water-fleas, 164-165 



CryptohranchidcB (giant sala- 

 manders), 352-353 



Cryptobranchus alleganiensis , 



352-353 

 Crystal worts, 60 

 Culex, 295 

 CulicidcB (mosquitoes), 283, 



290, 293-295 

 Culicoides, 292-293 



Cyanide, potassium, killing 



bottles, 28, 29, 40 

 CyanophycecB (blue green 



algae), 47 

 Cy bister, 270-271 

 Cyclops, 17, 116, 159, i6(>- 



161, 326 

 Cyprinidce (minnows and 



carps) 334-337 

 Cypris, 116 



Dace, black-nosed, 334-335; 

 horned, 336 



Damselflies, 76, 88, 179, 188, 

 189, 213-216,220-225,326; 

 adults, 213-214; associates, 

 216; food, 215; nymphs, 15, 

 36, 214-215; occurrence, 

 215; preservation, 43 



Daphnia, 113, 115, 116, 158, 

 160; pulex, 19, 165 



Darters, 325, 343, 344-345; 

 in rapids, 22, 34; Johnny, 

 344-345; rain bow, 326; 

 tesselated, 345 



Darwin, Charles, 144 



Davis, 244 



Decapoda (crayfish), i6j, 172- 



174 

 De Geer, 191 



Dendroccelum, Frontispiece, 

 125; lacteum, 122, 126 



Dero, 144, 146-147 



Desmids, 47, 48-49, 50, 52, 

 203, 348; distribution in 

 pond life, 13; in plankton, 

 16; in rapids, 22; in springs, 

 34; light needed b}^ 10, 

 II 



Desmognaihus fuscus, 354, 

 362-363 . 



Devil's darning needles, 213 



Diaptomus, 167 



DiatomacecE, (diatoms) 47 



Diatoms, 46, 47, 50, 51, 52, 

 55, 162, 165, 203, 205, 257, 

 263, 286, 296; distribution 

 in pond life, 1 3 ; in plankton, 

 16, 17; in rapids, 22, in 

 springs, 34 ; light needed for, 

 10, II; reproductive capac- 

 ity, 17; silica shell, 51 



435 



