I am reading a book by Alligood et al. on dynamical systems. The following picture is supposed to show the stable and unstable manifold of the map. According to the book the cross sign seen on the leftmost and bottom corner of the picture is the saddle point of this map. Henon map is defined as:
$$f(x,y)=(a-x^2+by,x)$$

and in the right picture $a=1.4$ and nothing is mentioned about $b$. The point is how can we get that many intersections between stable and unstable manifolds when we only have two fixed points?; how can unstable and stable manifold intersect each other but don't generate a fixed point???