A List of Spiders From Mona Island, With Descriptions of New and Little Known Species

The small Mona Island, between Haiti and Puerto Rico, is rarely visited by collectors and its spider fauna is little known. I n 1914 Mr. N. Banks described two new species from there in a short paper published in the Bulletin of the American Museum of Natural History, and much later, 1929-1930, Dr. A. Petrunkevitch noted in his "Spiders of Porto Rico " fifteen species, of which three were new. Recently, two small collections from Mona have been received by the Museum of Comparative Zoology. The first was from Dr. Serrallgs of Puerto Rico, who spent a week there during April, 1944. He very kindly sent the material to me for identification. The second collection was from Mr. Harry Beatty, who spent the month of August of the same year there. Neither collection is large, either in species or specimens, but as the island is small and not very diversified, the spider fauna probably is small. Four species are new. This paper lists the forty-one species that have been reported from Mona and includes descriptions of the four new species and the hitherto unknown form of Hentsia squamata (Petr.) , with elongate mandibles. Collecting a t a different season would undoubtedly add many more species. The following is a list of the species collected by Dr. Serralles in April and by Mr. Beatty in August 1944.