New American Tarantulas of the family aviculariidae

While accumulating material for a long needed review of nearctic mvgalomorph spiders, a considerable number of species in the family Aviculariidae have been noted which it seems desirable to diagnose and name at this time. It is the purpose of the present paper to do this. It has been found convenient for the present to recognize and use the genera indicated in the key given below, although the limitation of some of these groups, e.g., Dugesiella and Aphonopelma, is not yet as precise as might be wished for. Of these genera Aplionopelma embraces the great majority of the species of the United States falling in the old group Eurypelma as used by Simon.