THE 
freak DGE NATURAL HISTORY 
ear 
EDITED BY 
S. F. HARMER, Sc.D., F.R.S., Fellow of King’s College, Cambridge ; 
Superintendent of the University Museum of Zoology 
AND 
A. E. SHIPLEY, M.A., F.R.S., Fellow of Christ’s College, Cambridge; 
University Lecturer on the Morphology of Invertebrates 
VOLUME VII 
