mythography
noun
my·thog·ra·phy mi-ˈthä-grə-fē 
1
: the representation of mythical subjects in art
2
: a critical compilation of myths
mythographer
mi-ˈthä-grə-fər
noun 
Word History
Etymology
myth + -o- + -graphy, perhaps after Greek mȳthographía "writing of fables" or French mythographie "study of myths"
First Known Use
1851, in the meaning defined at sense 1