Our knowledge of the fungi of Santo Domingo is comparatively meager. Berkeley (5) appears to have been the first to make a study of the fungous flora of this Island. His work is based on a collection made by A. Salle and eighteen of the sixty-seven species studied were described as new. Later Berkeley (6), in connection with his studies of Australian fungi, reexamined his Santo Domingan species, Peziza domingensis, and made it the type of the new genus Phillipsia. With the exception of a few short papers by Gonzalez Fragoso and Ciferri (13), (14), (15), (16), (17), Ciferri and Gonzalez Fragoso (9), dealing with the fungi, and a note by the writer (28) on the myxomycetes of that Island, all references to Santo Domingan fungi are scattered within the literature of other regions. The fungus Aecidium Cordiae P. Henn. was described from a specimen collected in Santo Domingo, by Ehrenberg, and pub? lished by Bresadola, Hennings and Magnus (7) in connection with their studies on Porto Rico fungi. Leveille (18) and Lloyd (19) refer to the fungi collected by Poiteau in Hispaniola. It is doubtful, however, whether these fungi belong to Santo Domingo proper since there is no record of Poiteau having ever collected outside of Haiti. Fee (11) describes a new species of Sphaeria from this Island, S. divaricata, which was renamed by Saccardo (21) Xylaria divaricata (Fee) Sacc. Saccardo (l.c.) also re? examined most of Berkeley's Santo Domingan species of Hypo? xylon and changed them to Xylaria. Reference is also made by Saccardo (22) to a rust described by deCandolle from this Island. In his studies of the Uredinales, Arthur (1), (2), (3), (4) includes Santo Domingo in the geographical distribution of many of the species. Burt (8) refers to species of Stereum collected by Taylor and by Stevenson; Olive and Whetzel (20) extend the range of Endophyllum Stachytarpetae to this Island, wThile the writer (29) 66