INDEX 
Acetabularia (Figs. 43 and 44), 
145, 146, 147, 148, 149, 150, 151, 
154, 155 
Acetabulariew, 145 
Acicularia (Figs. 42 and 43), 150, 
151 
Acroblaste, 170, 172, 173 
Acrochaete, 170, 172, 173 
Acropeltis, 215 
Acrotylew, 216 
Acrotylus, 216 
Actinococcus, 216, 219 
Actinotrichia, 210, 213 
Adenocystis, 54, 76, 79, 84, 107 
Agarum (Fig. 14), 76, 79 
Aylaozonia, 56, 57, 59, 65 
Ahnfeltia, 216 
Alaria (Fig. 12), 76, 78, 79, 81, 85 
Amphiroa, 241, 244 
Anabaina, 254 
Anadyomene, 156, 163, 164, 165 
Anisocladus, 115 
Antithamnion, 237 
Antheridium (Figs. 2, 34, 62, 84), 
49, 58, 61, 68, 128, 202 
Apjohnia, 160, 165 
Arthrocladia, 99, 101 
Arthrothamnus, 76 
Ascocyclus, 110, 117, 119 
Ascophyllum, 45, 49, 54, 55 
Asparagopsis, 233 
Asperococcus (Plate II.), 108 
Atractophora, 215 
Auxiliary cell (Fig. 82), 204 
Auxospore, 194 
Avrainvillea (Fig. 37), 137, 139 
140, 141, 143, 144 
a 
Bacteriastrum (Fig. 60) 
Bactryllium, 199 
Balbiania, 200 
Ballia, 237 
Bangia, 246, 248 
Bangiacew, 246 
Batrachospermum, 200, 207, 208 
Battersia, 111, 114 
Bellotia, 86, 87 
Binderella, 215 
Blastophysa, 159, 165 
Bolbocoleon (Fig. 53), 170, 171, 172, 
173 
Bonnemaisonia, 233 
Bonnemaisoniew, 232 
Boodlea (Fig. 49), 163, 165 
Bornetella (Fig. 45), 152, 155 
Bornetia, 237 
Botryophora, 151, 152, 155 
Bostrychia, 200, 235 
Bryopsis (Plate III.) (Fig. 36), 
124, 132, 133, 135, 136, 137, 138 
Calliblepharis, 224 
Callipsygma, 143, 144 
Callithamnion (Fig. 78), 235, 236, 
237, 238 
