. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. MYRIAPODA. 559 membrane, soon to be exposed by another change of skin that was about to take place. The Julus ceased to eat, became torpid, and lay coiled up in a spiral form. The tegument of the body began to assume a whitish crustaceous appearance, and the ani- mals secreted themselves beneath any dry co- vering, but avoided parts too wet. The princi- pal changes in their general appearance were in the eyes, each ocellus being much more dis- tinct, and in the germinal space, which was developed to its greatest extent,
. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. MYRIAPODA. 559 membrane, soon to be exposed by another change of skin that was about to take place. The Julus ceased to eat, became torpid, and lay coiled up in a spiral form. The tegument of the body began to assume a whitish crustaceous appearance, and the ani- mals secreted themselves beneath any dry co- vering, but avoided parts too wet. The princi- pal changes in their general appearance were in the eyes, each ocellus being much more dis- tinct, and in the germinal space, which was developed to its greatest extent, and distinctly exhibited the six new segments. The change of skin, according to Mr. New- port, is effected in the following manner. The young Julus, when about to cast its integu- ment, bends its body in a semicircular form, with its head inflected against the under sur- face of the second segment. In this condition it remains for several hours with its legs widely separated and the dorsal surface of the segments extended. The head is then more forcibly bent on the sternum, and a longitudinal fissure takes place in the middle of the epicranium, and is immediately extended outwards on each side posteriorly to the antennae in the course of other sutures, the analogues of which Mr. Newport has described as the triangular and epicranial sutures. Through the opening thus formed in its covering the head is then carefully withdrawn, and with it the antennse and parts of the mouth, and afterwards the anterior seg- ments and single pairs of legs. The first and apparently the most difficult part of the shed- ding of the skin is its detachment from the posterior segments of the body and from the interior of the colon. To effect this the ani- mal, which has been previously lying coiled up in a circular form, first straightens its whole body; it then forcibly contracts and shortens itself, especially at the posterior part, and by this means becomes greatly enlarged in bulk at its middle po
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