INDEX 



Diclielyma, 62; capillaceum, 

 62-63 



Dickerson, 370 



Dicranomyia, 34, 284 



Dineiites, 272, 273 



Diptera (flies), 179, 189,282- 

 300; key to larvae, 282-283; 

 BlepharoceridcB, 283. 297- 

 298 ; ChironofuidcB, 283, 289- 

 293; CuUcidcE, 283, 293- 

 296; PtychopteridcB, 282, 

 287-289; Simuliid(B, 283, 

 296-297 ; Strati omyiidcB, 2 83 , 

 299-300; Syrphidcc, 282; 

 Tahanidcc, 283, 298-299; 

 Tipulidcc, 283-287 



Dishes, aquaria, 38 



Ditch-moss, 80 



Ditmars, R. L., 394, 406 



Dobson-flies, 240, 241, 244-245 



Donacia, 59, 73, 93, 192, 265, 

 278-281 



DonaciincB, 278-281 



Dragonflies, 76, 88, 179, 185, 

 186, 188, 189, 192, 213-219. 

 226, 263, 267, 272, 286, 

 303; adults, 213-214; 

 aquarium study , 216; 

 associates, 215-216; col- 

 lecting, 34, 35; food of, 17, 

 50, 215; in aquaria, 39; 

 killing of, 40; larvce, 15; 

 life history cages, 36, 37; 

 nymphs, 3, 18, 21, 26, 

 33. 34. 36, 214-215, 264, 

 300, 302; occurrence, 215; 

 preservation, 42 



Drosera rotundifolia, 98-99 



Droseracea (sundews), 98-99 



"Dry flies", as bait, 199 



Dryopidce, 262 . 



Ducks, 74, 75, 82, 83, 264 



Duckweeds, 11, 13, 14, 31, 

 59, 60, 82-85, 168, 228, 

 229; greater, 82-83; ivy- 

 leaved, 83-84; lesser, 84 



"Duns", 199 



DytiscidcB (diving beetles), 

 263, 265, 266-271 



Dytiscids (diving beetles), 

 266-271, 274 



Dytiscus, 192, 262, 268, 271 



Earthworms, 139, 143, 145 

 Eelgrass, 15, 80-82 

 Eels, American, 331-332 

 Electric-light bug, 233-234 

 Electric lights, collecting 



near, 35, 247 

 Elliptio complanatus, 320- 



321 

 Elodea, 37, 38, 52, 58, 79-80, 



116, 117, 170, 192, 230, 



258, 304, 309, 323, 356; 



canadensis, 79-80 

 Elophila fulicalis, 260 

 Embody, G. C, 170, 171, 



335 

 Enallagma, 214, 216, 224; 



aspersum, 214; exsula^is, 



222, 

 EnchytrcBidcB, 216 

 Enock, 236 

 Entomostraca, 160, 161- 165; 



Branchiopoda, 161-163; 



Cladocera, 164-165; Cope- 



poda, 1 66- 167; Ostracoda , 



168-169; Phyllopoda, 161- 



165 

 Entomostracans, 52, 275, 294 

 Envelopes, storage, 42 

 Epeorus, 23, 199, 211-21^ 

 Ephemera, 19, 33, 206, 207 

 Ephemerella, 210; rotunda, 



185, 187 

 Ephemerida (mayflies), 179, 

 189, 198-213; Bcctince, 208- 

 211; EphemerincB, 204-207; 

 HeptagenincE, 2 1 1-2 1 3 

 Ephemerince (burrowing may- 

 flies), 204-207, 210 

 Ephippium, 165 

 Epicordidia, 302 

 Epiphragma, 284, 285 

 Epistylis, 46, 56-57 

 Equipment, collecting, 26- 



EsocidcB (pickerel), 338-339 

 Esox niger, 338-339 

 Eiihranchipiis, 162; vernalis, 



163 

 Eucalia inconstans, 339-341 

 Euglena, 49, 51 

 Eupomotis gihhosus, 340, 341- 



342 



436 



