Allantoic Calculus.

Allantoic Calculus.
Allantoic calculi are acellular concretions that float freely in the allantoic fluid. They are a source of curiosity at the time of delivery. In the bovine they are called bovomanes, in the equine hippomanes. Analogously, they should be called bubomanes or bubalomanes in Bubalus bubalis.

Vale WG (1987)