Anisotropic Cosmological Models with MacCallum Parameter

In this paper, we present two anisotropic cosmological models: a T-model that is homogeneous and the other a non T-model that is inhomogeneous. We have constructed formula for all the physical and kinematical quantities and established relations among them. Equations of state are constructed. Both these solutions can be applied to all the epochs of the universe for which xi epsilon [0,1) - {1/2}, where the quantity xi is a MacCallum parameter and describes the anisotropy of the 4dimensional space-time. It is explicitly shown that the T-model presented here is more general solution in the sense that it includes the one given by McVitte and Wilt-shire.