5(5 F. E. FRITSCH. 



PLATE II. 



FIGS. 74-78. Lyngbijn lagtrhrimi (Mob.) Gomont ; 74, 75, typical portions of the stratum ; 7fi, 77, two 



filaments from the stratum, showing spiral coiling ; 78, a single filament on a larger scale 



with the contained trichomc. (74-77, X 5oo ; 7*, X 1200.) 

 FIGS. 70-84. Lyngbya nUenunln- sp. n. ; 79-83, different types of apex of the trichomes ; 84, a filament. 



(X sou.) 

 FIGS. 85-8G. Lyinjbya teruffiiMO-canika (Kiitz.) Gom. ; 85, s;V, normal filament (x 700); 8G, filament 



with gonidia (x sou). 

 Fins. *7-90. Lyni/bi/a trst/'/irii (Mortens) Liebm., var. aniarctirn var. nov. See p. 27. (87, X 800 ; 



NX-90, x 700.) 



FIGS. Sl-M.Lynyltyrt. srotli sp. n. (91, 92, X 700 ; 1)3, X 1200.") 

 FIGS. 94-9G. ,, var. minor var. nov. (x!350.) 



FIGS. 97-9H. Navic/i-l/i seminal inn Grun. (x 1250.) 

 FIGS. 99-100. xttin.roji/1'riH.tfrs sp. n. (99, x 1800; loo, x 1250.) 

 FIGS. 101. cymatopleurusW.&ndG.&.'Weat,. (x 125o.) 



FIGS. W-2-lOfi.lUicrocystis chrooroccoidea W. and G. S. West, (x 800.) 



FIGS. 104-10*. Nodnhiria spumiffe/ia Mertens, var. minor nov. var. (104-106, x soo ; 107-los, x 1300.) 

 FIGS. 109-115. Nodularia qiuu Irala . sp. n. 112-114 show different types of apices; 115 shows filament 



with a probably immature spore, (x 800.) 

 FIGS. 11G-117. Dactylococcopsis rlniphiilioides Hansg. The group in fig. 116 shows a distinct septum in 



several of the cells. ( x 800.) 

 FIGS. 118-120. Anahma antarctica sp. n., filaments with spores; the smaller spores in fig. 118 arc 



probably immature. ( x 500.) 

 FIGS. 121-122. Dactylocori-ojisis unlardica sp. n. ; 121, small part of the colony ; 122, a cell in process of 



division, (x 1350.) 



