252 Rhodora [OCTOBER 
NOTES ON NEW ENGLAND DESMIDS,— II. 
JosEPH A. CUSHMAN. 
Tur Desmids reported here are from two different localities. One 
collection was made from a small pond on Misery Island, off Beverly 
Farms, Massachusetts, by the writer; the other from Kittery, Maine, 
by Dr. Roland Thaxter. Both contain species not hitherto definitely 
reported from New England and each includes species new to the 
state in which the collection was made. The specimens reported 
are in the herbarium of the writer, and they are indicated as H. C. 
no. 400, etc. The collection from Misery Island was from a small 
pond which at first glance would seem to be salt or at least brackish, 
but tides do not appear to reach the pond for it is fresh and contains 
fresh-water algae, among them many Desmids. It was thought at 
first that no filamentous forms were present, but a species of 
Sphaerozosma has turned up; curiously enough a species not before 
reported from New England. "The assemblage of species is in many | 
ways a curious one. Except where they have been reported from 
several localities in different states and are thus already known to 
have a wide range in New England, the previously reported locali- 
ties are given. Docidium and Fenium two of the common genera 
seem to be wanting. The following species were identified in the 
collection : 
1. Sphaerozsosma spinulosum Delp., var. Diam. ro m. A little 
wider than long, granules and not spines; otherwise like Delponte’s 
species; more often two granules than three on each margin, In 
each semi-cell is a projection not shown in Wolle’s figure of the spe- 
cies. Not common. New to New England. (Herbarium of J. A. 
Cushman, no. 376.) 
2. Closterium Jenneri Ralfs. Diam. 15 p, length across tips 70 p. 
Rare. (H. C. no. 382.) 
3. Closterium lineatum Ehrb. Diam. 50 p, length across tips 8o p. 
Not rare. (H. C. no. 337.) 
4. Closterium Lunula Ehrb. Diam. 95 p, length 540 p. Seems 
to be rare. (H. C. no. 370.) 
5. Closterium subtile Bréb. Diam. 6-7 p, length 218 pu. The 
diameter is greater than that given by Wolle, but the plant otherwise 
fits the description and figures of the species. Reported before only 
` from Orono, Maine. Rare. Mew to Massachusetts. (H.C. no. 382.) 
