270 THE ENTOMOSTRACA OF EPPING FOREST.
C. languidus, and C. vernalis. The rarest species found here has
been, perhaps, Cyclops prasinus.
Eagle Pond, Snaresbrook. At first sight this pond
appears similar in type to Connaught Water, as it is
quite free from evident vegetation. It is however, pro-
bably much deeper than Connaught Water, and, more
important still, it has a clean gravelly bottom instead of clay, at
least for some considerable distance from the shore. In conse-
quence of this its waters are never turbid. The two groups of
species—namely, plankton and bottom, forms furnish in this
case also the great majority of the Entomostraca, but the number
of species is much greater than in Connaught Water, and there
are, moreover, a greater number of the common forms which find
a home almost anywhere. Eagle Pond is, in fact, from the point
of view of the student of Entomostraca, a kind of very superior
Connaught Water. The plankton species are the same as in the
latter, but with the addition of Diaphanosoma brandtianum, Cerio-
daphnia, quadrangula, Daphnia galeata ?, D. cucullata ?, Diaptomus
gracilis, and Cyclops strenuus (vicinus). The bottom dwellers are
also practically the same with some important additions, such
as Camptocerens rectirostris, Alonella rostrata, Monospilus tenuirostris,
&c. Eagle Pond has yielded two very good things which
have not been found elsewhere within the district—namely,
the species last mentioned and Nitocra hibernica.
Goldings Hill Ponds, Loughton. These ponds
belong to a rather common type with luxuriant plant growth
and do not present any very striking features in the
way of Entomostraca. It may be noted, nevertheless, that a
variety of Acropems harpae has been found in these ponds which
has not been taken at any other station.
Higham Park Lake. This is a very good all-round
collecting ground for Entomostraca. It is somewhat like
the "Perch" Pond, Wanstead Park, in general character,
but harbours more vegetation, especially large beds of water-
lilies, and is apparently not quite so rich in species. How-
ever, it has given two rarities to the Forest list—namely,
one of our rarest British fresh-water Copepods, Eurytemora
lacinulata, which is found in it pretty abundantly at times,
and Ceriodaphnia scitula, which has hitherto only been found in
the United States.