The thesis is the first attempt in Ukrainian and foreign literature study to make a comparative analysis of the fiction by F.S.Fitzgerald and T.Osmachka. The methodology of the text interpretation is based on the theoretical and methodological conceptions of C.-G.Jung, M.Eliade, N.Frye, J.Campbell, C.Levi-Stross, Y.Lotman, W.Schmid, G.Genett, D.Naluvayko, N.Ovcharenko,S.Pryhodij and others. Such an approach proved to be useful and productive for the text analysis.The dissertation focuses on the typology of symbolism in F.S.Fitzgerald's “The Great Gatsby” and T.Osmachka's “The Senior Bride's Man”. Based upon the archetypical criticism it examines in details the complicated system of the “demonic” world which constitutes the symbolic outline through the prism of “exterior” and “interior” symbolic images. It is stated that the “demonic” world of both authors is still in the process of transformation from the “apocalyptic” one. Nevertheless the “double vision” of Fitzgerald is contrasted to mainly evil palette of Osmachka. It is also underlined that the peculiar integrity of the “exterior” and “interior” images, typical for both authors, based on the Ukrainian and American ethnosophy. The thesis also explores architectonics components in the texts. It reveals the circle's great potential as a structure resisting conscious perception, suggests versatile interpretations of the triad, the tetrada and the heptada in the microcosm of “The Great Gatsby” and “The Senior Bride's Man”. The tragedy of idealist is determined to have national and personal characteristics such as traits of immigrant's, puritan's, rusveltian and enlightment periods drama, unique qualities of an antique buffoon and a medieval knight in “The Great Gatsby” and the peculiarities of psychological crises and split of Ukrainian nation, drama of Ukrainian intellectual and the Cossacks, Christian drama in “The Senior Bride's Man”. The thesis also investigates the symbolism of narrators as the implication of different social status and models. It exposes the eternal (a priest, a Sage) as well as other everyday images of the narrator in “The Great Gatsby” and predominantly typical and everyday life ones (a peasant, a teacher, a patriot, a Ukrainian) in “The Senior Bride's Man”.The researcher probes into application of Apollo and Dionysus discourse and as a result stresses two types of main heroes in the texts under consideration: the active type of Gatsby (Prometheus) as a combination of Aryan and Semitic myths and the passive one of Lundyk (Oedipus).The author draws to the conclusion that different implications of structure and symbolic elements in the texts show the originality and peculiarity of Fitzgerald's and Osmachka's world outlook in combination with national, pagan and Christian perception.