Rationally cubic connected manifolds II

We study smooth complex projective polarized varieties $(X,H)$ of dimension $n \ge 2$ which admit a dominating family $V$ of rational curves of $H$-degree$3$, such that two general points of $X$ may be joined by a curve parametrizedby $V$ and which do not admit a covering family of lines (i.e. rational curvesof $H$-degree one). We prove that such manifolds are obtained from RCCmanifolds of Picard number one by blow-ups along smooth centers. If we further assume that $X$ is a Fano manifold, we obtain a strongerresult, classifying all Fano RCC manifolds of Picard number $\rho_X \ge 3$