314 THE ENTOMOSTRACA OF EPPING FOREST.
Diaphanosoma brandtianum, Fischer. — Daphnella
wingii (in part), Baird (2); Daphnella brachyurum, Scourfield
(82 and 85). ft is held by Richard in his recent Revision (101)
that the two forms D. brachyurum (Lievin) and D. brandtianum
(Fischer) are distinct species, although sometimes very difficult
to distinguish. The Epping Forest forms evidently belong to
the last-named species.
Family—DaphnidAe. .
Moina rectirostris, O. F. Muller.—Baird (2), Brady
(20). The single gathering of this species was from the margin
of the Warren Pond, Chingford, and consisted of ordinary
and ephippial females and males. The ephippial females
were smaller than the ordinary forms (which were
about 1/19'') and noticeably reddish. The ephippium con-
tained only one egg—an important fact from a diagnostic point
of view, as the closely related M. brachiata is stated to have two
eggs in the ephippium. The males were still smaller than the
ephippial females, and the tip of each of their antennules was
furnished with the usual nine olfactory setae and five hooks
bifurcated at the extremity.
Ceriodaphnia megalops, Sars.—Daphnia reticulata (in
part), Baird (2), Tab. VII., Fig. 5; Ceriodaphnia megops, Scour-
field (81 and 82).
Ceriodaphnia rotunda, Strauss. — Daphnia rotunda,
Baird (2).
Ceriodaphnia reticulata, ]urine. —Daphnia reticulata,
Baird (2). From Higham Park a small variety of this species
has been seen which may have been C. kursii, Stingelin (104).
Ceriodaphnia quadrangula, O. F. Muller.—Scourfield
(81 and 82). I have retained the name quadrangula for this
species, although our forms are probably not the same as those
recorded by Sars under that name. They are, on the contrary,
more closely allied to that author's C. pulchella.
Ceriodaphnia scitula, Herrick (95).—This species,
which has only been found at Higham Park, is an addition to
the British fauna, A few words of description, based on our
Epping Forest examples, may not be out of place, therefore, in
this connection. The species is rather a large one—well-
developed females reaching at least 1/30" length. The general