Transcriber’s Note:
This work features some large and wide tables. These are best viewed with a wide screen.

THE
CAMBRIDGE NATURAL HISTORY

EDITED BY

S. F. HARMER, M.A., Fellow of King’s College, Cambridge; Superintendent
of the University Museum of Zoology

AND

A. E. SHIPLEY, M.A., Fellow of Christ’s College, Cambridge;
University Lecturer on the Morphology of Invertebrates

VOLUME III

Map to illustrate