INDEX 



1087 



^ploparaksis, 443; filum, 443 



Apocrangonyx, 843 



Apodina, 630 



Apparatus and Methods, 61 ; references, 88, 89 



Apsilidae, 611 



Apsilus, 611; bucinedax, 5ii 



Aptogonum, 137; baileyi, 137 



Apus, 671; aequalis, 663, 671, longicaudatus, 



672, lucasanus, 672, newberryi, 671 

 Aquatic animals, birds, earthworms, etc.; 



see Animals, Birds, Earthworms, etc., 



aquatic 

 Arachnida, 17 

 Arcella, 221; dentata, 222, discoides, 222, 



■Bulgaris, 222 

 Arcellidae, 220 

 Archerinia boltoni, 144 

 Archigetes, 430 



Archilestes (imago), 923, (nymph), 92S 

 Arcidens, 1003; confragosa, 1003 

 Argia (imago), 923, (nymph), 928 

 Argulidae, 786-788; key, 787, 788; see Cope- 



poda; Siphonostomata 

 Argulus, 787; americanus, 787, appendiculo- 



sus, 787, catostomi, 787, ingens, 78S, lepido- 



slei, 788, maculosus, 787, slizostelhi, 788, 



versicolor, 787, 788 

 Arhythmorhynchus, 550; brevis, 550, pumili- 



rostris, 551, trichocephalus, 550, uncinatus, 



■ 55° . 



Arkansia, 1004; wheeleri, 1004 



Armiger, 984 



Arrhenurinae, 863 



Arrhenurus, 863; albator, 86s,forpicaius, 863, 

 globator, 863, maculalor, 863 



Artemia salina, 668 



Arthrodesmus, 141; cornier gens, 141 



Arthropoda, 17 



Arthrospira, 108; jenneri, 108 



Ascaridae, 531 



Ascaris, 531; ardeae, 532, cylinirica, S3i> 

 entomelas, 531, helicind, 532, lanceolata, 531, 

 longa, 531, lumbricoides, 512, microcephala, 

 532, mucronala, 532, nigrovenosa, 531, 

 penila, 531, serpentulus, 532, sulcata, 531, 

 ienuicollis, 531 



Ascaroidea, 531 



Ascoglena, 252 



Ascomorpha, 607; ecaudis, 607 



Asellidae, 841 



Asellus, 841 ; communis, 841 -. 



Aspidisca, 291; coslata, 291 



Aspidobranchia, 994 



Aspidocotylea, 379 



Aspidogaster, 380; conchicola, 380 



Aspidogastridae, 379 



Asplanchna, 607 ; herrickii, 382, 607, priodonta, 

 607 



Asplanchnidae, 571, 607 



Asplanchnina, 607 



Asplanchnopus, 607; myrmeleo, 607 



Assimenia, 986; californica, 986 



Assimeniidae, 986 



Association, coefficient of, 54 



Assulina, 230; minor, 230, seminulum, 230 



Astacus, 846 



Astasia, 254; trichophora, 254 



Astasidae, 253 



Asterionella, 133; gracillima, 133 



Asteromeyenia, 311; plumoso, 312, ratfio 



spiculata, 312 

 Asymphylodora, larva of, 423 

 Atractides, 874; spinipes, 874 

 Atractonema, 254; iortuosa, 254 

 Atrochus, 611; lentaculatus, 611 

 Aturinae, 864 



Aturus, 866; mirabilis, 866, scaber, 866 

 Atyidae, 845 



Aulophorus, 639; Jurcatus, 639, vagus, 639 

 Auricula, 978; pellucens, 978 

 Auriculidae, 977 

 AuricuUnae, 977 



Auridistomum, 397; chelydrae, 397 

 Auxospores, 125 



Awerinzewia, 227; cyclostomata, 227 

 Axonopsis, 866; complanata, 866 

 Azygia, 392; /mcm, 392, sebago, 371, tereticolle, 



392 

 Azygiidae, 392 



Bacillariaceae (diatoms), 125-134; key, 125- 

 134; iee Algae, Fresh-Water, excl. of Blue- 

 Green 



Bacteria, 13, 90-99; aerobes, obligatory, 93, 

 anaerobes, facultative and obligatory, 93, 

 94, bacillus coli as index of contamination, 

 1069, classification, 90, forms, 91, metachro- 

 matic granules, 92, microorganism, 94, 

 movement, 92, number, 94, in natural 

 waters, 96, 1070, references, 99, spores, 92, 

 structure, 91 



Baetis (imago), 921, (nymph), 922 



Baetisca (imago), 9r9, (nymph), 921 



Baileya, 176 



Balladina, 288 i 



Bangia, 177; atro-purpurea, r77 



Bartonius, 849 



Basiaeschna (imago), 925, (nymph), 930 



Bastiana, 497; exilis, 497 



Bathymermis, 505 



Batrachia (Amphibia), 1028, 1029; refer- 

 ences, 1066; see Vertebrata, aquatic 



Batrachospermum, 176; grabussoniense, 176 



Bdellodrilus, 644; illuminatus, 644, insta- 

 bilis, 644, philadelphicus, 644, pulcherrimus. 

 644 



Bdelloida, 576, 619 



Beetles, aquatic; see Coleoptera; Insecta 



Belostoma, 934 



Belostomatidae, 933 



