Marsupium, a "pouch," or "bag"), the group of mammals in which the young are usually carried for some time after birth in a pouch on the under-surface of the body of the female.
Manubrium and In C the marsupium (m) is formed as finger-like another below the process from the summit of the blastostyle, en closing the acrocyst; b, medusa-buds on the radial canal in blastostyle.
In particular the Schizopods of the family Mysidae, which are abundant in the sea round our coasts, are often called "Opossumshrimps" from the fact that the female is provided with a ventral pouch or "marsupium" in which the eggs and young are carried.
Packets, attached as ovisacs or egg-strings to the genital openings, or enclosed in a dorsal marsupium, or deposited singly or occasionally in bundles.
- Diagrams to show the mode of formation of an Acrocyst and a Marsupium.