Published in Occasional Papers of the Museum of Zoology, University of Michigan, in 1920, in volume 87, pages 1-7

Created: 2011-06-02, modified: 2017-01-06

Published in Occasional Papers of the Museum of Zoology, University of Michigan, in 1920, in volume 88, pages 1-6

Created: 2011-05-19, modified: 2017-01-06