With the exception of the meagre notices, communicated by OVIEDO and CEREZEDA and their compilers, the source of our knowledge of _Nicaraguan_ antiquities is E. G. SQUIER’S interesting work «Nicaragua: its people, scenery, monuments and the proposed interoceanic canal». After SQUIER some other American investigators have followed in the road opened by him; Dr. EARL FLINT of Rivas has during many years searched for and collected antiquities, partly in the Department of Rivas, partly in the island of Ometepec. I am obliged to Dr. FLINT for much valuable information on the present subject, kindly communicated to me, when I had the pleasure of meeting with him at Rivas in January 1883. He has sent the collections gradually brought together by himself, to the _Smithsonian Institution_. In «_Archæological researches in Nicaragua_»[4] Dr. J. F. BRANSFORD gives a highly interesting description of his researches in Ometepec, where he made a large collection of grave-urns, other vessels of pottery, and smaller relics of stone and metal. He occupied himself principally in investigating burying-places on the west side of the island and he has thrown a new light on this part of Niquiran archæology. His very large collection, of 788 numeros, is deposited in the collections of the Smithsonian Institution in Washington. He has also figured several rock-carvings from Ometepec; these seem to be a little ruder and less complicated than those delineated by me from the island of Ceiba. Dr. BRANSFORD also describes several ancient relics from _Talmac_, _San Juan del Sur_ in the department of Rivas, and some localities in Nicoya, in the republic of Costa Rica. From a linguistic point of view Dr. BERENDT[5] has given very valuable contributions to our knowledge of the ancient civilisation of Nicaragua by his sharp-sighted and successful investigations into the Indian idioms of that country and into those of Mexico and of the northern parts of Central America. [4] Smithsonian Contributions to knowledge (383), vol. 25. Washington 1885 (1881). [5] See above. * * * * * In the night of the New-Year’s-eve 1882-1883 I arrived at _Ometepec_ from Granada, and took up my head-quarters at the little borough of _Muyogalpa_, in the north-west corner of the island. From this point excursions were made in different directions, and, although my time was pretty severely taxed by zoological researches, I found however some opportunities of undertaking archæological diggings.