vagum, 568, also 567; PI. 135 

 Benthos, 3 

 Bemardinella, 212 

 Binuclearia, 102, also 94, 581 



tatrana, 102; PI. 7 

 Botrydiaceae, 368 

 Botrydiopsis, 349, also 587, 588 



arhiza, 350; PI. 95 

 Botrydium, 368, also 587 

 granulatum, 369; PI. 96 

 Wallrothii, 368 

 Botr>'ococcaceae, 231, also 210, 355 

 Botryococcus, 231, also 355, 574, 586 

 Braunii, 232, also 231; PI. 52 

 protuberans var. minor, 232; PI. 52 

 sudeticus, 232; PI. 52 

 Botryochloridaceae, 356, also 348 

 Bottom deposits, 42 

 Bulbochaete, 145, also 584 

 alabamensis, 147; PL 25 

 angulosa, 148, also 146; PI. 25 

 borealis, 148, also 147; PI. 25 

 Brebissonii, 148, also 146 

 congener, 148, also 147; PI. 25 

 crassa, 149, also 147; PI. 25 

 crassiuscula, 149, also 147 

 crenulata, 149, also 147 

 dispar, 149, also 147; PI. 25 

 elatior, 149, also 146; PI. 26 

 Furberae, 150, also 146, 147; PI. 26 

 gigantea, 150, also 147; PI. 26 

 hiloensis, 150, also 146; PI. 24 

 insignis, 150, also 146; PI. 26 

 intermedia, 151, also 147; PI. 26 



var. depressa, 151; PI. 26 

 minor, 151, also 146; PI. 26 

 minuta, 151, also 146 

 mirabilis, 151, also 146; PI. 27 



fa. immersa, 152 

 Nordstedtii, 152, also 146, 147; PL 27 

 obUqua, 152, also 146; PL 24 

 polyandria, 152, also 147; PL 27 

 praereticulata, 153, also 147; PL 27 

 pygmaea, 153, also 146; PL 27 

 rectangularis, 163, also 146; PL 27 

 regaUs, 153, also 146; PL 28 

 repanda, 154, also 146; PL 28 

 reticulata, 154, also 146; PL 28 

 scrobiculata, 154, also 146; PL 28 

 sessilis, 154, also 147; PL 28 

 setigera, 155, also 147; PL 28 

 tenuis, 155, also 146 

 valida, 155, also 147; PL 24 

 varians, 155, also 146; PL 28 

 var. subsimplex, 155 

 Bumilleria, 366, also 365, 587 



sicula, 366; PL 96 

 Bumilleriopsis, 360, also 587 

 brevis, 360; PL 95 



Calcium, 16, 20, 21, 26, 27, 28, 39 

 Calothrii, 551, also 550, 593 



adscendens, 552, also 551; PL 130 



atricha, 552; PL 129 



Braunii, 552, also 551; PL 131 



breviarticulata, 552; PL 132 



epiphytica, 553, also 552; PL 132 



fusca, 553, also 551; PL 132 



parietana, 553, also 552; PL 132 



stagnalis, 553, also 551; PL 132 



stellaris, 554, also 551 

 Carbonates, 8, 49 

 Carbon dioxide, 4, 7, 12, 14, 16, 18, 20, 



26, 29, 33, 37, 38, 43, 49 

 Carotin, carotinoids, 342 

 Carteria, 72, also 69, 572 



cordiformis, 73, also 72; PL 1 



Klebsii, 73, also 72; PL 1 

 Centritractaceae, 359, also 348 

 Centritractus, 360, also 355, 587 



belanophorus, 361, also 360; PL 95 

 dubius, 361, also 360; PL 93 

 Cephaleuros, 132 

 Cerasterias, 271, also 233, 580 

 irregularis, 271 



staurastroides, 271; Pis. 56, 61 

 Ceratiaceae, 435, also 427 

 Ceratium, 436, also 590 

 carolinianum, 436; PL 92 

 cornutum, 437, also 436; PL 92 

 curvirostre. See Ceratium carolinianum 

 hirundinella, 437, also 425, 436; PL 92 

 Ceratophyllum demersum, 48, 531, 560 

 Chaetonema, 126, also 113, 119, 583 



irregulare, 126, also 119; PL 13 

 Chaetopeltis, 124, also 114, 583 

 americana, 124 

 orbicularis, 124; PL 16 

 Chaetophora, 117, also 98, 113, 584 

 attenuata, 118; PL 13 

 elegans, 118; PL 14 

 incrassata, 118, also 11, 126; PL 14 

 pisiformis, 119, also 118; PL 13 

 Chaetophoraceae, 113 

 Chaetophorales, 112, also 67 

 Chaetosphaeridium, "ISO, also 112, 127, 131, 

 575, 578 

 globosum, 131, also 130; PL 14 

 ovalis, 131, also 130; PL 14 

 Pringsheimii, 131, also 130; PL 14 

 fa. conferta, 131 

 Chamaedaphne, 566 

 Chamaesiphon, 476, also 591 

 confervicola, 476; PL 108 

 curvatus, 476; PL 108 

 incrustans, 477, also 476; PL 108 

 Chamaesiphonaceae, 475 

 Chamaesiphonales, 475, also 444 

 Chantransia, 565 

 Chantransiaceae, 564 



Chara, 334, also 3, 6, 7, 12, 28, 46, 184, 

 585 

 Braunii, 336; PL 81 

 canescens, 337, also 336; PL 81 

 contraria, 337, also 336 

 elegans, 338, also 336; PL 82 

 excelsa, 338, also 336; PL 81 

 formosa, 338, also 336, 340 

 fragilis, 339, also 336; PL 82 

 gymnopus var. elegans. See Chara elegans 

 Schweinitzii, 340, also 336, 337; PL 80 

 sejuncta, 339, also 336; PL 82 

 vulgaris, 340, also 336; PL 82 

 Characeae, 330, also 571 

 Characiaceae, 214, also 210 

 Characiopsidaceae, 357, also 348 

 Characiopsis, 357, also 588 

 acuta, 358, also 357; PL 95 

 cylindrica, 358, also 357; Pis. 45, 94 

 lageniformis, 358; PL 93 

 longipes, 358, also 217, 357; PL 93 

 pyriformis, 358; PL 93 

 spinifer, 359, also 357; PL 94 

 Characium, 215, also 214, 256, 357, 579 

 acuminatum, 216; PL 46 

 ambiguum, 216; PL 45 

 curvatum, 216; PL 45 

 Debaryanum, 216, also 215; PL 46 

 falcatum, 216; PL 45 

 gracilipes, 217, also 215; PL 45 

 Hookeri, 217, also 215; PL 45 

 limneticum, 217, also 215; PL 45 

 obtusum, 217, also 215; PL 45 

 operculum, 217, also 215; PL 46 

 ornithocephalum, 218, also 215; PL 46 

 Pringsheimii, 218, also 215; PL 45 

 Rabenhorstii, 218, also 215; PL 46 

 rostratum, 218, also 215, 216; PL 45 

 stipitatum, 218, also 215; PL 45 

 Charales, 330 



[966] 



