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In this paper, we consider hybrid wireless networks with a general node density @l@?[1,n], where n ad hoc nodes are uniformly distributed and m base stations (BSs) are regularly placed in a square region A(n,A)=1,Ax1,A with A@?[1,n]. We focus on multicast sessions in which each ad hoc node as a user chooses randomly d ad hoc nodes as its destinations. Specifically, when d=1 (or d=n-1), a multicast session is essentially a unicast (or broadcast) session. We study the asymptotic multicast throughput for such a hybrid wireless network according to different cases in terms of m@?[1,n] and d@?[1,n], as n-~. To be specific, we design two types of multicast schemes, called hybrid scheme and BS-based scheme, respectively. For the hybrid scheme, there are two alternative routing backbones: sparse backbones and dense backbones. Particularly, according to different regimes of the node density @l=nA, we derive the thresholds in terms of m and d. Depending on these thresholds, we determine which scheme is preferred for the better performance of network throughput.