  Two new exact analytical solutions of the euclidean Einstein equations for a
minimal massless scalar field and negative cosmological constant have been
obtained. These solutions are given in terms of Jacobian elliptic or circular
functions, rather than hyperbolic functions, connect large asymptotic regions
of maximally-symmetric anti-DeSitter metrics through a microscopic throat, and
correspond to negative definite components of the Ricci tensor. Therefore, they
describe wormhole-like changes of topology driven by nucleation of baby
universes. The quantum state of such elliptic and circular wormholes or handles
is discussed in the most interesting inner and asymptotic regions.
