CONATOZYdON. 33 



SCOTLAND. Loch Harrow, Kirkcudbright ! 



IBKLAND. Clifden, Loughs Derrychnv and Sbanna- 

 cloontippen, Galway ! Lough Guitane and near Lough 

 Brin, Kerry ! 



Geofjr. Distribution. Q&licia, in Austria. Germany. 



This variety is more often found than the typical form at 

 considerable elevations in mountainous districts. It lins been 

 placed as a distinct species, but all intermediate stages occur 

 between the smooth forms a,nd the roughest specimens of 

 typical (T. Brcbissonii. 



Var. minutum West & G. S. West, (PI. I, figs. 15, 10.) 



Gonatozyyon minutum West, Alg. N. Wales, 1890, p. 282, t. v, f . 1 ; West, 



Alg. W. Ireland, 1892, p. 114. 

 G. Bw'bissonii var. minutum West & G. S. West, Alga-fl. Yorks. 1900, 



p. 39. 



Cells much smaller than in the typical form, subcylin- 

 drical, and narrowed towards the poles ; cell- wall 

 minutely granulate. 



Length 47'-j-67'5 n ; breadth 4"2-7 ft. 



ENGLAND. Cumberland ! Westmoreland ! W. and E. 

 Yorks ! Surrey ! Hants ! Cornwall ! 



WALES. Capel Curig and Llyn-y-cwm-ffynon, Car- 

 narvonshire ! 



SCOTLAND: Harris and Lewis, Outer Hebrides ! Skye, 

 1 1 1 verness ! 



IRELAND. Frequent, especially in the west ! 



Geoff r. Dixfri/>ufin)t. East Africa. 



3. Gonatozygon Kjellmani Wille. 

 (Plate I, fig. 17.) 



Gonatozyrjon Kjellmani Wille, Ferskv. Alg. Nov. Semlj. 1897, p. 59, t. xiv, 



f. 78. 

 G. Brebissonii De Bary, var. Kjellmani Eacib. Nonn. Desm. Polon. 18S5, 



p. 69. 



Cells 8 times longer than their diameter, commonly 

 cylindrical, slightly curved, a little swollen in the 

 middle, constricted under each pole ; cell-wall very 

 minutely punctulate. Pyrenoids about two in each 

 chloroplast. 



3 



