These bones however have no connection with the marsupium, being nearly equally developed in both male and female.
Name a diminutive of marsupium, a pouch, from the form of the perianth.
Mammals belonging to quite different Orders show traces more or less marked of a marsupium.
That there is more than one pouch makes a comparison with the mammary pouch rather than with the marsupium probable.
These are distinguished by the possession of a permanent nursery-pocket, the "marsupium."