lOG MEMOIRS OF THE XEW YORK BOTAIS^ICAL GARDEN 



PLATE 6 



Figure 54. FJacoma M'illei 



A surface view of a part of a mature colony x 500 



" 55. Entuphysalis cJiloropliora 



A section of a portion of a thallus perpendicular 



to the substratum x 500 



" 56. Eiifophysalis violacca 



A section of a portion of a tliallus pcrijendicular 



to the substratum x 500 



" 57. Cijanothrix primaria 



A single typical young tilament x 500 



" 58. Cijanothrix Willei 



A single typical young filament x 500 



" 59. Pleurocapsa epiphijfica 



As seen in surface view in various stages of de- 

 velopment below the line and in .section view 

 above the line x 500 



