326 THE ENTOMOSTRACA OF EPPING FOREST.
belonging to the "fuscus-albidus" group, although it is just as
certain that neither fuscus nor albidus is intended. On the other
hand what is said about the coloration agrees exactly with what
I saw in my specimens of the form now under consideration
when they were alive. As stated by Koch the anterior portion
of the carapace was finely spotted with brown whilst the
posterior thoracic segments and the feet were blue or rather blue-
green. To the naked eye the whole animal appeared of a blue-
green colour and attracted attention at once as something out of
the common.
ft has been suggested that this peculiar and rare form is
really a hybrid between C. fuscus and C. albidus and this may
indeed really be the case. But although having in general a
structure intermediate between C. fuscus and C. albidus it also
possesses some peculiarities of its own (see accompanying
drawing of receptaculum seminis and fifth foot), and it is certainly
better for the present to consider it as a distinct species than to
mix it up in our records with the two species mentioned.
The three localities where this species has been found are a
pond by the side of Rectory Lane, Loughton, a pond just north
of Ambresbury Banks, and a bog-pond by the side of Lodge
Road leading to Copped Hall. All the individuals hitherto seen
have been females.
Cyclops serrulatus, Fischer.—Lubbock (48), Brady
(16 and 19).
Cyclops ? macrurus, Sars.—Brady (16 and 19). This is
a very doubtful Epping Forest species. The specimens seen
were males and may really have been C. serrulatus, but their
caudal rami were so extraordinarily long that reference to that
species seemed excluded.
Cyclops prasinus, Jurine. — C. magnoctavus, Brady (19);
C. prasinus, Scourfield (83). Besides the two stations given in
Table I., this interesting species has been taken in a pond near
Fairmead Lodge, and in another near the "Owl," Leppit's Hill.
Cyclops affinis, Sars.—Brady (16 and 19).
Cyclops phaleratus, Koch.—C. canthocarpoides, Lubbock
(48); C. phaleratus, Brady (16 and 19).
Cyclops fimbriatus, Fischer.—C. crassicornis, Brady (16);
C. fumbriatus, Brady (19).