A new species of xerophilic Eleutherodactylus belonging to the Antillean ricordi complex is described from the southern coast of the Haitian Presqu'Tle du Nord Ouest, Hispaniola. The Cuban members of the leptodactylid frog genus Eleutherodacty have been divided (Dunn, 1925, 1926; Schwartz, 1958) into a series of groups, of which only one, the auriculatus group, occurs also on the continental mainland (Lynch, 1976). The most widespread of the Cuban Eleutherodactylus groups is the ricordi group; it occurs on all the Greater Antilles and a large number of its members are Hispaniolan. I (Schwartz, 1976) have recently reviewed one complex of ricordi group members, but several problems within even that small complex of 11 species on Hispaniola, Cuba, Puerto Rico, and the Virgin Island, remain unresolved. The present paper contributes one more species that is related to that complex, whose Hispaniolan members include E. pictissimus Cochran, E. weinlandi Barbour, E alcoae Schwartz, E. probolaeus Schwartz, and E. warreni Schwartz. These species in general occur throughout much of Hispaniola, although there are several obvious hiatuses where no member of the complex has been recorded. One of these is the Haitian Presqu'Tle du Nord Ouest; in fact, this peninsula remains one of the least known areas of Hispaniola. The present paper deals with a new species of frog from the periphery of this region. In July 1978, Eugene D. Graham, Jr., William W. Sommer, and I collected extensively along the southern shore of the Presqu'lle du Nord Ouest, between the cities of Gonaives and Coridon. Although the road is coastal and low throughout much of this distance, a portion close to the city of Gonaives passes over a series of limestone hills that descend abruptly to the ocean. The flora and aspect are xeric, and the limestone is eroded into blocks, boulders, and steep cliffs; there are several caves between Ca Soleil (which is the intersection of this coastal road with the main north-south artery between Gonaives and Cap-HaTtien) and a coastal oasis on the northwestern side of these hills. The general region is known as Lapierre, and it is rich in its herpetofauna. Graham and Sommer collected at two localities at night in an area of steep cliffs and boulder jumbles, including a shallow cave about 7 m up on the side of the cliff. While at the cave, they heard a frog call but were unable to find the maker of the sound. That the cave might offer a haven in such a xeric situation was attested by the fact that solution holes in limestone boulders at the cave mouth contained mosses. By chance, Graham, while searching for the calling frog, secured a single non-calling individual, not within the cave but adjacent to it. We can only assume that the call they heard was made by another member of the same species. Two individuals were calling, despite the lack of rain during the preceding day; there had been a deluge in this same region the previous afternoon. Because even with appropriate weather conditions, the region presents difficulties and hazards for night collecting, and because there is no assurance that other specimens will soon be collected, it seems preferable to name this new species on the basis of one specimen, a course of action that I deplore. Yet the frog is so distinctive that I have no doubts that it represents a new taxon, a member of the ricordi group and of the complex within that group noted above. In honor of Eugene D. Graham, Jr., who collected the holotype, I propose that it be called