Spondylomoraceae, 79, also 68 

 Spondylomorum, 79, also 572 



quateriiarium, 80; PI. 3 

 Spongilla, 235 



Staurastrum, 18, 938, PI. 3 (Appendix) 

 Staurogenia multiseta var. punctata, 285 

 Stentor, 235 

 Stephanodiscus, 409,943, PI. 5 (Appendix) 



niagarae, 11 

 Stephanosphaera, 81, also 80, 572 



pluvialis, 81; PI. 46 

 Stichococcus, 98, also 95, 582 

 bacillaris, 99; PI. 6 



fa. confervoidea, 99 

 scopulinus, 99; PI. 6 

 subtilis, 99; PI. 6 

 Stigeoclonium, 114, also 98, 113, 583, 584 

 attenuatum, 115, also 114; PI. 13 

 flagelliferum, 115; PI. 11 

 lubricum, 115, also 116; PI. 10 

 nanuni, 116, also 114; PI. 9 

 pachydermum, 116, also 114; PI. 12 

 polymorphum, 116, also 114; PI. 9 

 stagnatile, 117, also 114; PI. 11 

 subsecundvim, 117, also 114; PI. 10 

 tenue, 117, also 115 

 Stigonema, 546, also 543, 549, 594 

 mamillosum, 547; PI. 130 

 mesentericum, 548, also 547; PI. 130 

 ocellatum, 548, also 547, 594; PI. 130 

 tomentosum. See Stigonema ocellatum 

 turfaceum, 548, also 547; PL 129 

 Stigonemataceae, 543, also 478 

 Stipitococcaceae, 344 

 Stipitococcus, 344, also 588 



apiculatus, 345, also 344; PI. 93 

 capense, 345; PI. 93 

 crassistipatus, 345; PI. 93 

 urceolatus, 346, also 344; PI. 93 

 vasiformis, 346, also 345; PI. 95 

 Stylosphaeridium, 91, also 579 



stipitatum, 92; PI. 4 

 Symploca, 504, also 479, 593 



muscorum, 504; PI. 113 

 Syncrypta volvox, 374 

 Syncryptaceae, 374 

 Synechococcus, 460, also 445, 591 



aeruginosus, 461; PI. 102 

 Synura, 375, also 19, 590 

 Adamsii, 375; PI. 92 

 uvella, 376, also 374, 375; PI. 92 

 var. longipes, 376 

 Synuraceae, 374 



Temnogametum, 296 

 Temperature, 43 

 Tetradesmus, 282, also 272, 577 

 Smithii, 282; PI. 64 

 wisconsinense, 283, also 282; PI. 64 

 Tetradinium, 440, also 438, 589 

 javanicum, 440; PI. 93 

 simplex, 440; PI. 107 

 Tetraedron, 260, also 233, 235, 242, 271, 

 578, 580 

 armatum, 262; PI. 59 

 arthrodesmiforme, 262, also 261; PI. 59 



var. contorta, 263; PI. 59 

 asymmetricum, 263, also 262; PI. 59 

 bifurcatum, 263, also 261; PI. 59 



var. minor, 263; PI. 59 

 caudatum, 263, also 261; PI. 59 

 var. incisum, 263 

 var. longispinum, 264; PI. 59 

 constrictum, 264, also 262; PI. 59 

 cruciatum, 264, also 262 



var. reductum, 264; PI. 59 

 duospinum, 264; PI. 46 

 enorme, 265, also 262; Pis. 52, 59 

 var. pentaedricum, 265; PI. 59 



gigas, 265, also 261 



var. granulatiim, 265 

 gracile, 265, also 262; PI. 60 

 hastatum, 265, also 262; PI. 59 



var. palatinvim, 266; PI. 59 

 irregulare, 263 

 limneticum, 266, also 262; PI. 60 



var. gracile, 266; PL 60 

 lobulatum, 266, also 262; PL 60 

 var. crassum, 266; PL 60 

 var. polvfurcatum, 267; PL 60 

 lunula, 267, also 261; PL 60 

 minimum, 267, also 261; PL 60 



var. scrobiculatiun, 267 

 muticum, 267, also 261; PL 60 

 fa. punctulatum, 268; PL 60 

 obesum, 268, also 261; PL 60 

 pentaedricum, 268, also 261; PL 60 

 planctonicum, 268, also 262; PL 60 

 pusillum, 268, also 262; PL 60 

 quadratum, 268, also 261; PL 46 

 regulare, 269, also 261; PL 60 

 var. bifurcatum, 269; PL 61 

 var. granulata, 269; PL 61 

 var. incus, 269; PL 61 



fa. major, 269; PL 61 

 var. torsum, 269; PL 61 

 staurastroides, 27i 

 trigonum, 270, also 261; PL 61 

 var. gracile, 270; PL 61 

 var. papilliferum, 270 

 var. setigerum. Sec Treubaria setigerum 

 tumidulum, 270, also 261; PL 61 

 veriucosum, 270, also 261; PL 61 

 Victoriae, 270, also 261 

 var. major, 270; PL 61 

 Tetragoniella, 354, also 349, 588 



gigas, 354; PL 95 

 Tetrallantos, 287, also 272, 575, 577 



Lagerheimii, 287; PL 66 

 Tetraspora, 87, also 89, 126, 236, 573, 574 

 cylindrica, 88, also 87; PL 5 

 gelatinosa, 88, also 87; PL 5 

 lacustris, 88; PL 5 

 lamellosa, 88, also 87; PL 5 

 lubrica, 89, also 88; PL 5 

 Tetrasporaceae, 87, also 82, 475 

 Tetrasporales, 81, also 66 

 Tetrastrum. 286, also 272, 576 

 punctatum, 286 

 staurogeniaeforme, 286; PL 66 

 Thorea ramosissima, 564 

 Thoreaceae, 564 

 Tolypella, 333, also 331, 585 



intricata, 334; PL 78 

 Tolypothrix, 536, also 509, 533, 535, 540, 

 595 

 conglutinata, 537, also 536; PL 125 

 distorta, 537, also 536; PL 125 

 lanata, 537, also 536; PL 125 

 limbata, 538, also 536; PL 126 

 tenuis, 538, also 536, 537 

 var. Wartmanniana, 538 

 Trachelomonas, 407, also 19, 388, 389, 408, 

 571, 585 

 abrupta, 410; PL 83 



acanthostoma, 410, also 408; Pis. 83, 85 

 aculeata, 408 



fa. brevispinosa, 410; PL 85 

 armata, 410, also 409; PL 83 

 fa. inevoluta, 411; PL 83 

 var. longispina, 411; PL 83 

 var. Steinii, 411; PL 83 

 bulla, 411, also 408; PL 84 

 charkowiensis, 411, also 408; PL 85 

 crebea, 411, also 408 



var. brevicollaris, 412; PI. 84. 

 cylindrica, 412, also 410; PL 83 

 var. punctata. Sec Trachelomonas 

 lacustris 



[976] 



