A countable set of asymptotic space -- localized solutions is constructed by the complex germ method in the adiabatic approximation for 3D Hartree type equations with a quadratic potential. The asymptotic parameter is 1/T, where $Tgg1$ is the adiabatic evolution time. A generalization of the Berry phase of the linear Schrodinger equation is formulated for the Hartree type equation. For the solutions constructed, the Berry phases are found in explicit form.