The eels of the northern Gulf Coast of The United States and some related species.

The main object of this paper is to elaborate the external characters by which the eels of the northern Gulf coast of the United States may be distinguished and readily identified. To this end, keys to the families and species of apodal fishes in the area are provided, as well as descriptions and synonymies. The geographic limits with which this paper deals are from the Rio Grand to the region between Cape Romano and Cape Sable, Florida, excluding the Florida Keys.