140 



REFERENCES TO THE PLATES. 



Plate XLVIII. A. — Petalonema alatum, Berk. p. 99. 



B. — Microcoleus corymhosus, Harv. p. 109. 



C. — Ccdothrix pilosa, Harv. p. 106. 



D. — Calothrix dura, Harv. p. 107. 

 ■ XLIX. A — Bangia vermicularis, Harv. p. 55. 



B. — Pil:ea Californica, Suppl. p. 131. 

 « L, A Dasya Harveyi, Ashm. Suppl. p. 127- 



'ii.-'^Chondria nidifica, Harv, Suppl. p. 125. 



PUBLISHED BY THE SMITHSONIAN INSTITUTION, 

 WASHINGTON CITY, 



MARCH, 1858. 



A 



