29 
placed in bottles as to mix species as little as possible. A mile 
west of Buhler’s, in the shallow water at Long Point, cream-like 
masses of pure MMelosira nummuloides may be sometimes met 
with. On the north side of the river, a little above where the 
north channel opens out into the bay, Schizonema Americanum 
grows in great abundance. It makes its appearance in light 
brown tufts upon eel-grass, about the last week in July, and con- 
tinues for ten days or two weeks, varying somewhat in the time 
of its appearance in different seasons. Amongst it may some- 
times be found Berkleya fragilis, a species which, like the Schi- 
zonemez, also occurs in gelatinous fronds. 
Between the railroad and the broad part of the bay are a 
number of islands, and, in the shallow pools found on these, very 
interesting collections of mixed species may be made. The 
wonderful Bacillaria paradoxa is abundant, and several species 
of Pleurosigma are found in considerable numbers. 
Occasionally after a heavy easterly storm, but frequently at 
other times, the tide carries in from the sea great quantities of 
several of the smaller species of alge. Upon these, Licmophora- 
tincta, L. flabellata and the various species of Grammatophora 
are often very abundant. On such occasions the collector has 
but to anchor his boat in the current and catch the specimens as 
they float by, examining each separately. They should be so 
placed in bottles as to keep the various species as well separated 
as possible. Valuable collections may often be made in this 
manner. 
The appended list of species is by no means exhaustive, as 
every new gathering is likely to furnish others not previously 
observed. The collections were made principally during the 
months of July and August, and extend over a period of about 
six or seven years. 
DIATOMACE# OF SHARK RIVER, N. J. 
Achnanthes brevipes, Agardh, common on alge, south side of bay. 
Amphiprora lepidoptera, Greg., occasional, south side, foot of B 
street. 
Amphora aponina, Greg., abundant and pure on flat near inlet. 
