| AMERICAN NATURALIST, 
AN ILLUSTRATED MAGAZINE 
OF 
ES TURAL HISTORY. 
EDITED BY 
A. S. PACKARD, Jr, axo EDWARD D. COPE. 
ASSOCIATE EDITORS: 
W. N. LOCKINGTON, DEP. OF GEOGRAPFY AND TRAVELS. 
Pror. H. CARVILL LEWIS, DEPARTMENT OF MINERALOGY. 
ProF. HENRY SEWALL, DEPARTMENT OF PHYSIOLOGY. 
’ Dr. C. O. WHITMAN, DEPARTMENT OF MICROSCOPY. 
VOLUME XVII. 
PART SECOND. 
3 PHILADELPHIA : 
n PRESS OF McCALLA & STAVELY, 
Nos. 237 AND 239 Dock STREET. 
1883. 
