THE ENTOMOSTRACA OF EPPING FOREST. 325
be connected, in the Epping Forest District, with the "brevi-
cornis" form by any intermediate links, and I have often been
tempted to consider them specifically distinct in spite of the oppo-
site opinion of Schmeil and other excellent observers. The former
is an exceedingly widely distributed form, but rarely occurs in
the open waters of ponds of moderate size, whilst the latter, on
the contrary, is practically only found in such situations. I have
noticed that in addition to its very much greater size, "gigas"
can always be distinguished from "brevicornis" by the presence
of a line of hairs on the inner margin of each caudal ramus, and
by its longer ovisacs.
Cyclops bicolor, Sars. — C. diaphanus, Scourfield in
J.Q.M.C. (57), V. p. 407; C. bicolor, Scourfield (85).
Cyclops fuscus, Jurine. — C. coronatus, Lubbock (48); C.
signatus, Brady (16) and in part (19), Scourfield (82).
Cyclops albidus, Jurine. - C. tenuicornis, Lubbock (48),
Brady (16), Scourfield (82); C. signatus (in part), Brady (19).
Cyclops bistriatus, Koch.
1. Receptaculum seminis x 150.
2. Fifth foot x 200.
Cyclops bistriatus, Koch.—C. albidus var. distinctus,
Richard (fide Schmeil 103); C. distinctus, Schmeil (103)
"Nachtrag." On three occasions 1 have taken specimens of a
Cyclops curiously intermediate between C. fuscus and C. albidus.
There can be no doubt that these were practically the same as
those alluded to by Schmeil (103) as C. albidus var. distinctus,
Richard, and later as C. distinctus, Richard. I further believe
that they ought to be called C. bistriatus, Koch. The figure and
description given by Koch (96) evidently refer to a Cyclops