2591. 
2092. 
2595. 
2596. 
2597. 
2598. 
2599. 
2600. 
2601. 
2602. 
2603. 
. hyalina, Bréb. 
. roseo-persicinus, Rabenh. 
. Miniatus, Naeg. 
. vulgaris, Menegh. 
. geminata, Wolle. 
. intertentus, Grun. 
. crustiformis, Naeg. 
. incrustans, Kuetz. 
. Contarenii, Kuetz. 
176 
Abundant in ditches in April and May. 
894. PLEUROCOCCUS, Menegh. 

Especially abundant on the submerged parts of water-plantain, 
(Alisma Plantago.) 
895. CYLINDROCAPSA, Reinsch. 
Wolle. 
Sus-Orprr 3; PH YCOGHROMOPRY CES: 
896. SCHIZOSIPHON, Kuetz. 
Determined by Wolle. 
Determined by Wodlle. 
: 
| 
. Cataractez, Naeg. 
Niagara Falls, Wodlle. 
897. SYMPHYOSIPHON, Kuetz. 
On rocks exposed to the spray of Niagara Falls. JVod/e. 
In same situations with the last. Wod/e. . 
898. ARTHROSIPHON. Kuetz. | . 
. alatus, Rabenh. (Petalonema alatum, Berk ) 
‘*On dripping rocks under Biddle stair-case, Niagara Falls.’’ 
flarvey. 
$99. DIPLOCOLON, Naeg. 
. Heppii, Naeg. 
| 
Niagara Falls, Wodle, | 
goo. SCYTONEMA, Agardh 
. chrysochlorum, Kuetz. 
Shaded rocks, Niagara Falls, !/J o//e. 
