THE ENTOMOSTRACA OF EPPING FOREST. 315
outlines of the shell, &c., may be readily seen from the accom-
panying drawings, so that no detailed remarks on these are
necessary. The shell is covered with a nearly regular network
of comparatively small hexagons, which, although perfectly well
defined, do not appear to be so strongly developed as in the
specimens described by Herrick. The fornices are prominent,
but not angulated, though in the males there may be an indica-
tion of a tooth at the point of greatest extension. The antennules
in the female are small, but those of the male are large, being,
in fact, probably larger than in any other known species, with
the exception of C. megalops. The post-abdomen is tapered
towards the end, and is furnished with about 10 anal teeth.
The terminal claws are without combs. The females carry
about eight eggs in the brood chamber, and these are retained
Ceriodaphnia scitula, Herrick.
1. Female x 50. 2. Male x 50.
3. Post-abdomen of female x 85.
4. Antennule of male x 140.
in position by a very large spur, which quite overshadows the
little projection occupying the place of the second spur.
Scapholeberis mucronata, O. F. Muller.—Daphnia
mucronata, Baird (2); S. mucronata, Scourfield (82 and 83). The
evidence from the whole of Epping Forest is the same as that
already recorded from Wanstead Park, namely—that during the
earlier part of the annual period of activity only the cornuta form
is to be found, the typical form not making its appearance until
August at the earliest.
Simocephalus vetulus, O. F. Muller.—Daphnia vetula,
Baird (2).