New Millipeds from Peru and adjacent parts

The millipeds described in the present paper form part of the new forms found in the course o f a study of four important collections from Peru, Ecuador and Bolivia which have come into my hands fo r study. One of these lots embraces material in the American Museum of Natural History collected in 1945-1947' chiefly by F. Woytowski and loaned through the courtesy of Dr. Willis J. Gertsch; a second one was made fo r me in Ecuador by Mr. Clarke-Macintyre in 1937; the third was made in Bolivia by Dr. W. W. Mann on the Mulford Expedition; while the fourth and much the largest was made in Peruby Prof. W. Weyrauch by whom it was generously submitted to me fo r study. The surprising number of new forms that continue to appear in collections from this area results naturally from two causes, - the heretofore lack of careful collecting o f myriopods in the area and from the actual multiplicity of species due to the great diversity in environmental factors associated with the wide range in elevations and the large number o f well separated rivers and river valleys, etc. Thus the elevations from which specimens in the Weyrauch collection came range from 300 to 4,000 meters.