On a diplopod collection from Barro Colorado Island, Panama

The present paper presents the results of a taxonomic study of an important collection o f millipeds made bv Mr. Eliot C. Williams, Jr., of Northwestern University on Barro Colorado Island during July and August of 1938. Twenty-three species were secured, these representing •i very interesting and largely new humus faunule. " All o f the specimens were collected in the leaf debris of the forest floor. Some of them were collected by means of a Berlesc funnel, but the majority of them were picked up by hand." Nineteen species, eight genera and one family are named as new. The types of the new forms are in the author' s collection at the University of Utah.