EXPLANATIONS AND REFERENCES, 

 PLATE CCX. 



PAGE. 



Fig. 1. SPIRILLUM UNDULA, ...... 324 



l< 2. SPIRULINA JENNERI, two short sections, . . 323 



" 3. SPIRULINA TENUISSIMA, ..... 323 



Fi.^. I, 5. SPIRULINA DUPLEX, ..... 323 



Fig. 6. GLOEOTHECE CONFLUENS, ..... 325 



Figs. 7, 8. APHANOTHECE PALLIDA, ..... 325 



" 9, 10. APHANOTHECE PRASINA, ..... H25 



Fig. 11. SYNECHOCOCCUS AERUGINOSUS, .... 326 



" 12, 13, 15. MERISMOPIDIA GLAUCA, ..... 326 



Fig. 14. MERISMOPIDIA CONVOLUTA, . . . . 326 



l< 16. COELOSPHAERIUM KUETZINGIANUM, . . . 327 



Figs. 17, 18. CLATHROCYSTIS AERUGINOSA, two perforated thalli, greatly 



enlarged, . . . 3'J7 



Fig. 19. teguments quickly dissolve 



and cells float in mass, . 327 



" 20. GOMPHOSPHAERIA APONINA, . . . 328 



Figs. 21, 22. " " young conditions, . 328 



Fig. 23. MICROCYSTIS PROTOGENITA, .... 328 



" 24. POLYCYSTIS ICHTHYOBLABE, ..... 330 



" 25. ANACYSTIS PULVEREUS, ..... 329 



" 26-31. GLOEOCAPSA MAGMA, etc., ... . 331 



" 32. GLOEOCAPSA, compare Plate CXC1V, figs. 24-28, . 274 



" 33-37. APHANOCAPSA VIRESCENS, ..... 333 



Figs. 38, 39. APHANOCAPSA GREVILLEI, .... 333 



40, 41. CHROOCOCCUS TURGIDUS, .... 334 



Fig. 42. CHROOCOCCUS COHCERENS, ..... 335 



" 43. CHROOCOCCUS RUFESCENS, 335 



