The writer wishes to acknowledge the courtesy and assistance of the local agents of the United Fruit Company at Suretka, of Sefior Alejo Jimenez, Governor of the Talamanca district, Whose hospitality and courtesy were unlimited, and to his own wife, the late Gladys M. Skinner, Whose interest and zeal led her to endure the dan gers and hardships of the T alamancan forests, and who personally collected many of the specimens herein described. The thanks of the Museum are due also to the United States National Museum for a photo graph oi a costume collected by Dr Gabb which is reproduced herein.