The geological map of Pennsylvania, published in 1931 by the Pennsylvania Topographic and Geologic Survey and based, so far as the Devonian and Mississippian in the northeastern quarter are concerned, upon the work of the Second Pennsylvania Survey, gives a generalized, inaccurate picture of that region. It is the purpose of this paper to correct, as far as progress of field work will allow, the most glaring errors. The writer has published a number of papers dealing chiefly with the marine Middle and Upper Devonian stratigraphy of the State.1 These contain preliminary statements relating to the continental Devonian. Little detail has been set down. The present paper proposes to discuss the poorly understood succession of red and non-red continental sediments in northeastern Pennsylvania. Chiefly, it will be concerned with the stratigraphy of Susquehanna, Wayne, Pike, Monroe, and parts of Bradford, Wyoming, Lackawanna, Luzerne, and Carbon counties, but it will . . .