356 



FRESHWATER ALG^ OE LISMORE DISTRICT, 



Var. FALCIFORME, n.var. ._ 

 Cellulae superne pulcherrime crispatse. 



Long, vertical. 90, lat. 54 ; cell, 

 diam. 6 />t. 



Lismore(236) 



This species is very like Chara- 

 ciu7n ensiforme Herm., (cf. G. S. 

 West, Br. Frw. Alg.,p.200,fig.80D), 

 but it has no stipes or expanded 

 base, and no chlorophyllaceous con- 

 tents. It is still more like Chamce- 

 siphon ciirvatus Nord., Alg. Sand- 

 vich., p. 4, T.i., f.2, but the forms of 

 Chamcesiphon have a definite sheath 

 of considerable thickness, enclosino; 

 f > W a chlorophyllaceous core. The mem- 

 brane in Ghytridinm gracillimum 

 Y^ 2 ^^ very thin, is not of the nature of 



Chytridium (jraciUimum, n.sp. ; a sheath, and also there is no chloro- 

 a, 6, young forms ( x 330) ; c, phyll in the cell-contents. The 

 mature cell dehiscing ( x 400); gpecies is not uncommon, and small 

 d,tip of another ripe speci- ^^^^^ sometimes be met with 



men(x500): c, var. falcitormt, 



in numbers. 



men(x500); 

 n.var.( x 330). 



Chytridium clavum, n.sp. 



Cellulae claviformes, apice inflatse, capi- 

 tatse; inferne lateribus ad basin acutam 

 sensim sensimque convergentibus, stipite 

 nullo nee pede. Cytoplasma hyalinum 

 homogeneum. 



Cell. long. 20; lat. 2, ap. 3 /x. 

 Lismore(254). In quantity on Ilyal. 

 dissiliens. 

 Genus T r o c h i s i a Kiitz. 

 Syn., Acanthococcus Lagerheim. In every form mentioned 

 below, the contents of the cell were hyaline, without a trace of 

 chlorophyll. 



Fig. 3. 



Chytridium clavum, n.sp 



I x 665). 



