cy 
426 GEOLOGICAL SURVEY OF NEW JERSEY. 
M. truncata (Corda), Ralfs. 
Same habitat; common. 
5 
. triangularis, Wolle. 
Monmouth: Ocean Beach. 
. Jenneri, Ralfs. 
. laticeps, Nordst. (M. disputata, Wood.) 
. oscitans, Ralfs. 
. pinnatifida (Kiitz.), Ralfs. 
All frequent or occasional in ponds. 
M. Kitchellii, Wolle. 
Cape May: Dennisville. 
SEES 
M. arcuata, Bail. 
Atlantic: Pleasant Mills; and elsewhere in the southern 
counties. 
M. expansa, Bail. 
With the preceding species. 
M. Baileyi, Ralfs. 
Mercer: In pond, Princeton. 
M. foliacea, Bail. 
Morris: Denmark Pond. 
.M. muricata, Bail. 
In ponds ; occasional. 
M. apiculata, Menegh. (M. mucronata, Prelim. Cat.) 
Same habitat. 
STAURASTRUM, Meyen, 
S. muticum, Breb. 
Frequent in ponds. 
S. orbiculare (Ehrb.), Ralfs. 
Same habitat. 
S. majusculum, Wolle. 
Passaic: Longwood Pond. 
S. dejectum, Breb. 
Ponds ; common. 
S. megacanthum, Lund. 
