produce a more immediate result. The transition is so sudden, the
mimicry so threatening, that the unaccustomed observer will draw back
his hand, as though at some unknown danger. Seasoned as I am, I myself
must confess to being startled on occasions when my thoughts have been
elsewhere. The creature spreads out like a fan actuated by a spring, or
a fantastic Jack-in-the-box.

The wing-covers open, and are thrust obliquely aside; the wings spring
to their full width, standing up like parallel screens of transparent
gauze, forming a pyramidal prominence which dominates the back; the end
of the abdomen curls upwards crosier-wise, then falls and unbends itself
with a sort of swishing noise, a _pouf! pouf!_ like the sound emitted by
the feathers of a strutting turkey-cock. One is reminded of the puffing
of a startled adder.

Proudly straddling on its four hind-claws, the insect holds its long
body almost vertical. The murderous fore-limbs, at first folded and
pressed against one another on the thorax, open to their full extent,
forming a cross with the body, and exhibiting the axillæ ornamented with
rows of pearls, and a black spot with a central point of white. These
two eyes, faintly recalling those of the peacock's tail, and the fine
ebony embossments, are part of the blazonry of conflict, concealed upon
ordinary occasions. Their jewels are only assumed when they make
themselves terrible and superb for battle.

Motionless in its weird position, the Mantis surveys the acridian, its
gaze fixed upon it, its head turning gently as on a pivot as the other
changes place. The object of this mimicry seems evident; the Mantis
wishes to terrorise its powerful prey, to paralyse it with fright; for
if not demoralised by fear the quarry might prove too dangerous.