William Thomas Calman, 1911 Encyclopædia Britannica, Volume 28… (1911)
“ The female wood-louse carries her eggs, after they are extruded from the body, in a pouch or “marsupium” which covers the under surface of the thorax and is formed by overlapping plates attached to the bases of the first five pairs of legs. The young, on leaving this pouch, are like miniature adults except that they are without the last pair of legs. Like all Arthropoda, they cast their skin frequently during growth. As a rule the skin of the hinder half of the body is moulted some days before that of the front half, so that individuals in process of moulting have a very peculiar appearance. ”
