rface averages half an inch in length and the minor axis a
quarter of an inch.

At the cephalic pole of this body is a sort of mask, modelled roughly
on the head of the larva, and at the opposite pole a small circular
disk deeply wrinkled at the centre. The three segments that come after
the head bear each a pair of very minute knobs, hardly visible without
the lens: these are, to the legs of the larva in its previous form,
what the cephalic mask is to the head of the same larva. They are not
organs, but indications, landmarks placed at the points where these
organs will appear later. On either side we count nine stigmata, set
as before on the mesothorax and the first eight abdominal segments.
The first eight breathing-holes are dark brown and stand out plainly
against the yellow colour of the body. They consist of small, shiny,
conical knobs, perforated at the top with a round hole. The ninth
stigma, though fashioned like the others, is ever so much smaller; it
cannot be distinguished without the lens.

The anomaly, already so manifest in the change from the first form to
the second, becomes even more so here; and we do not know what name to
give to an organism without a standard of comparison, not only in the
order of Beetles, but in the whole class of insects. While, on the one
hand, this organism offers many points of resemblance to the pupae of
the Flies in its horny consistency, in the complete immobility of its
various segments, in the all but absolute absence of relief which
would enable one to distinguish the parts of the perfect insect;
while, on the other hand, it approximates to the chrysalids, because
the creature, to attain this condition, has to shed its skin, as the
caterpillars do, it differs from the pupa because it has for covering
not the surface skin, which has become horny, but rather one of the
inner skins of the larva; and it differs from the chrysalids by the
absence of mouldings which in the latter betray the appendages of the
perfect insect. Lastly, it differs yet more profoundly from the pupa
and the chrysalis because from both these organisms the perfect insect
springs straightway, whereas that which follows what we are
considering is simply a larva like that which went before. I shall
suggest, to denote this curious organism, the term _pseudochrysalis_;
and I shall reserve the names _primary larva_, _secondary larva_ and
_tertiary larva_ to denote, in a couple of words, each of the three