214 Rhodora [NovEMBER 
* Desmids of the United States (8)"; several species of Closterium in 
Cushman's “New England species of Closterium (4)"; two species 
in his “ New England Saccodermae (8)’’; and two species distributed 
in the Phycotheca Boreali-Americana of Collins, Holden and Setchell 
(1). 
Il. THE COLLECTING OF THE MATERIAL. 
The material which forms the basis of this report was collected in 
three types of habitat; in bogs, in swamps, and in ponds and lakes. 
Thirty-one localities were visited in the course of the collecting, and 
the yield was found to vary greatly according to the type of habitat. 
In respect to number of species, it was found that the bogs, three of 
which were visited, resulted in the least yield—ten to twenty species 
to each collection. The swamps seemed a slightly more favorable 
habitat, for of the nine swamps visited, each one resulted in a yield of 
from fifteen to thirty species. But by far the best habitat seemed to 
be the swampy margin of the small meadow pond, or the marshy 
coves of the larger lakes. Here, in the quiescent but clear water, 
the floating and submerged masses of moss, sphagnum or aquatic 
plants contained an abundant desmid flora. One small pond at 
Morris, not over fifteen yards wide, yielded fifty-two different species 
in abundance; and squeezings from floating masses of Riccia fluitans 
and Drepanocladus at Lake Congamond and Lake Quassapaug re- 
sulted in a yield of over seventy desmids at each locality. Without 
exception, sphagnum appeared to be a less favorable habitat than 
floating masses of moss or grass, or submerged masses of Myriophyllum 
and Chara. 
All of the counties in Connecticut were visited by the writer except 
Tolland, Windham and New London. The places of collection were 
distributed as follows: 
LircHFtELD County: Bethlehem (Longmeadow Pond); Litchfield 
(a, Bantam Lake, and b, swamp in the “ Pines”); Morris (small 
pasture pond); Plymouth (ice pond near Waterville); Thomaston 
(sphagnum swamp); Washington (Lake Waramaug); Watertown 
(small meadow pond fringed with sphagnum). 
Hartrorp County: Southington (small meadow pond); Suffield 
(Lake Congamond). 
FAIRFIELD County: Monroe (a, pond near Stepney, and b, swamp 
at East Village); Newtown (Botsford tamarack bog). 
