FIG. 
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LIST OF ILLUSTRATIONS 
Stictyosiphon Decaisneti, section. . . . Sita Me 
Hydroclathrus, sporangia and cryptostomata . . 
Sphacelaria, sporangia, &c. 
Ectocarpus confervoides . 
Caulerpa phyllaphlaston 
Caulerpa cactoides . . . . : 
Cawerpa liguata and C. elicstaiaa 
Cauerpa Carruthersii 
Vaucheria synandra . . 
Codium tomentosum, sporangium . 
Bryopsis Flanagant 
Avrainvillea, structure aes CANS ee eee 
Penicillus capitatus 2... 00 ee ee 
Rhipocephalus Phenix 
Udotea Pavonia . 
Halimeda monilis 
Acicularia Schenckti 2... 0. ww eee 
Acetabularia and Acicularia, structure 
Acetabularia crenuata 
Neomeris and Bornetella 
Valonia and Halicystis . 
Dictyospheria, structure . . 7 
Struvea macrophylla, S. plumosa, na 8. tenuis 
Boodlea coacta .. .... 
Gomontia polyrhiza 
Urospora penicilliformis 
Chetomorpha Darwinit 
Bolbocoleon piliferum . 
Letterstedtia insignis . . 
Halosphera viridis . 
Ceratium Tripos . Pee 
Pyrocystis noctiluca and P. ‘fiskfovms ar 
Rhabdosphere and Coccosphere . 
Pinnularia viridis, and diagram of successive divisions 
ofa Diatom .. ....... 
