FRESH-WATER RHIZOPODS FROM THE WHITE 
MOUNTAIN REGION OF NEW HAMPSHIRE. 
JOSEPH A. CUSHMAN AND WILLIAM P. HENDERSON. 
Sınce the publication of the Monograph of the Fresh-water 
Rhizopods of North America, by Dr. Joseph Leidy, little work 
has been done upon this very interesting group, especially as. 
regards New England. Their abundance and the singular 
beauty of some of the species should make them better known 
even to the most casual observer of the microscopic fauna of 
our ponds and streams. The number of species obtained from 
. New Hampshire was not great yet when compared with the 
whole number of shelled forms reported from North America it 
is a very fair representation. Certain forms found are appar- 
ently new and are reserved for further study. 
The region from which most of the specimens were obtained 
was not of great altitude nor of high latitude but nevertheless 
both of these conditions seem to play an important part in the 
comparative size of the individuals of the same species. In the 
summary at the end of the present paper is discussed the 
bearing of these points as made out from a study of the material 
under observation. 
The material used in the preparation of the present paper was 
of two kinds: mounted and unmounted. The former is in the 
collection of the Boston Society of Natural History and repre- 
sents the following localities: Saco Lake, Profile Lake, Lone- 
some Lake, Lake of the Clouds, Pinkham Notch, Franconia, 
Claremont, Gilmore Pond near Profile House, and Scribner's 
Brook, Wakefield. The unmounted material was preserved in 
formalin and represents the following localities: Pudding Pondat 
North Conway ; Intervale; a pond at 5000 feet on Mt. Munroe ; 
Mirror Lake in Chatham (all collected by Dr. Glover M. Allen) ; 
North Woodstock (including two lots from the Flume, collected 
by George A. Fisher); Squam Lake (collected by Herman 
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