2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/69650In contrast to the classical twistor spaces whose fibres are 2-spheres, we introduce twistor spaces over manifolds with almost quaternionic structures of the second kind in the sense of P. Libermann whose fibres are hyperbolic planes. We discuss two natural almost complex structures on such a twistor space and their holomorphic functions.LaTeX, 22 pages, to appear in Rocky Mountain J.MathDifferential Geometry53C28; 32L25; 53c26text