INDEX 



1093 



Desmonema, 112; wrangelii, 112 



Desmopachria (adult), 941 



Desmothoraca, 236 



Detracia, 979 



Dexiotricha, 280; plagia, 280 



Diamesa (larva), 945 



Diaphanosoma, 690; brachyurum, 691, 

 leuchtenbergianum, 69 1 



Diaptomus, 756; alberquerquensis, 771, ash- 

 landi, 765, asymmetricus, 769, bakeri, 770, 

 birgei, 758, clavipes, 760, coloradensis, 759, 

 conipedatus, 767, dorsalis, 769, eiseni, 765, 

 franciscanus, 766, judayi, 762, leptopus, 

 760, lintoni, 761, minutus, 764, mis sis si p- 

 piensis, 757, novamexicanus, 771, nudus, 

 772, oregonensis, 757, pallidus, 758, w- 

 pureus, 772, reighardi, 757, saltillinus, 768, 

 sanguiueus, 767, shoshone, 763, sicilis, 763, 

 siciloides, 773, signicauda, 773, spatulo- 

 crenatus, 766, stagnalis, 768, tenuicaudatus, 

 762, trybomi, 761, tyrelli, 759, wardi, 764, 

 washingtonensis, 770 



Diaschiza, 593; hoodii, 593 



Diatoma, 131; elongatum, 131 . 



Diatomaceae, 131 



Diatoms (Bacillariaceae) ; see Algae, Fresh- 

 Water, excl. of Blue-Green; Bacillaria- 

 ceae 



[Dibothrium] cordiceps, 432 



Dichelestidae, 784; see Copepoda 



Dichothrix, 113; interrupta, 113 



Dicrocoeliidae, 407 



Dicrocoelium, 407; dendriticum, 408 



Dictyocystis, 148 



Dictyosphaerium, 149; pidchellum, 149 



Dictyosphaeropsis, 150; palatina, 150 



Didinium, 272; nasutum, 272 



Didymops (imago), 925, (nymph), 930; Wwf- 

 weri, 926, transversa, 892 



Differentiator, 508, 509 



Difflugia 224; acuminata, 225, corona, 224, 

 constricta, 224, /e&es, 224, lobostoma, 224, 

 pyriformis, 225, urceolata, 224 



Digenea, 379 



Diglena, 589; forcipata, 589, rostrata, 589 



Digononta, 619 



Dilepididae, 444 



Dilepis, 444; transfuga, 444, unilateralis, 444 



Dileptus, 275; gigas, 275 



Dimorophococcus, 148; lunalus, 148 



Dina, 659; anoculata, 659, fervida, 660, mi- 

 crostoma, 659, />an>a, 659 



Dinamoeba, 219; mirabUis, 219 



Dineutes (adult), 937 



Dinobryon, 264; sertularia, 264 



Dinocharidae, 569, 597 



Dinocharis, 597; pocillum, 597 



Dinoflagelh'da, 269 



Dinomonas, 248; vorax, 248 



Dinops, 607 



Dioctophyme, 523; renale, 523 



Dioctophymidae, 523 



Dioicocestus, 448; paronai, 448 



Diorchis, 443; acuminata, 443, americana, 443 



Diphyllobothriidae, 431 



Diphyllobothriinae, 432 



Diphyllobothrium, 432; latum, 432 



Diplax, 593; -oidens, 593 



Diplobothrium, 378; armatum, 378 



Diplocardia, 643 



Diplochlamys, 220; fragilis, 220, timida, 221 



Diplodiscus, 387; temperatus, 387, 413 



Diplodiscinae, 387 



Diplodontinae, 86 1 



Diplodontus, 86 1; despiciens, 861 



Diplogaster, 488; Jfcfor, 488 



Diplogonoporus, 433; grandis, 433, 434 



Diplois, 593; daviesiae, 593 



Diplophallus, 448; polymorphus, 448 



Diplophrys, 233; archeri, 233 



Diploposthe, 446; Joews, 447 



Diplostomulum, 411, 424; cuticola, 411, w/- 

 z>es, 411 



Dip nets, 67 



Diptera (two- winged flies), aquatic, 909-916, 

 9!7 943-946; black-flies (Simuliidae), 

 913, key, 917, 943-946, larvae, 917, midges 

 (Chironomidae), 914, wing venation, 910, 

 916; see Chironomidae, Insecta, Simuliidae 



Dipylidiidae, 440 



Discodrilidae, 644 



Disease germs, water as conveyor of, 1068, 

 transmission of, 1068 



Dispersal of fresh- water life (biology), 13 



Dispharagus, 526, ardeae, 527 



Distemma, 589; setigerum, 589 



Distigma, 254; proteus, 254 



Distoma dendriticum, 408, helicis, 423, /awce- 

 olatum, 408, oricola, 408, polyorchis, 397, 

 wgans, 423, variabile, 406; see Distomum 



Distomata, 388 



Distome cercariae, 414 



Distomum as per sum, 391, centrappendiculalum, 

 411, flexum, 391, auriculatum, 396, <fM//t- 

 ca/wm, 421, nodulosum, 396; see Distoma, 



Distribution of life, 35 



Distyla, 593; inermis, 593, ohioensis, 593 



Diurella, 595; sulcata, 595, rigris, 562, 595 



Diversity of fresh- water life (biology), 12 



Dixidae (larvae), 944 



Dobson flies (Sialididae) ; see Insecta, Neuro- 

 tera, Sialididae 



Docidium, 139; baculum, 139 



Dolichodorus, 484; heterocephalus, 484 



Donacia (larva), 943 



Dormancy, 43 



Dorocordulia (imago), 926, (nymph), 931 



Dorylaimus, 485; fecundus, 485, labyrin- 

 thostomus, 485 



Dosilia, 311; palmeri, 311, plumosa, 311 



