EXPLANATIONS AND KEFEBENCES, 

 PLATE CCII. 



Figures magnified 250 diameters. 



PAGE. 

 Figs. 1, 2. LYNGBYA AESTUARII. forma minus, near New Jersey Sea Coast, 296 



Absecom, Perth Amboy, etc, compare 

 Plate CC, fig. 11-16. . . . 296 



" 3, 4. LYNGBYA STJBTORULOSA, from Florida, . . . 300 



Fig. 5-8. LYNGBYA RUPESTRE, specimens collected by ('apt. J. D. Smith, 



on rocks, Falls of Deep Creek, Maryland, 300 



" 9-11. LYNGBYA PAPYRINA, collected near New Haven, Conn., . 302 



" 12-14. LYNGBYA INTERRUPT A, from Charlotte, Vermont, . 302 



<l 15-17. LYNGBYA RETZII, from wet soil and wet roc-ks, . . 302 



Figs. 18, 19. LYNGBYA CATARACTA. water falls, Pennsylvania, . . 302 



'' 20,21. LYNGBYA JULIANA, from Florida and Alabama, . .301 



" 22, 23. LYNGBYA TINCTORIA, from Arizona, .... 301 



" 24, 25. LYNGBYA INUNDATA, margins of wayside ditches, . . 303 



Fig. 26-31. LYNGBYA PALLIDA, meadow grounds, New Jersey, Virginia, 



Florida, Pennsylvania, . . 298 



Figs. 32, 33. LEPTOTHRIX OCHRACEA, (not Lyngbya ochracea), . . 322 



