BY

A. E. SHIPLEY, Sc.D.

Hon.Sc.D. Princeton, F.R.S.

MASTER OF CHRIST’S COLLEGE, CAMBRIDGE, AND READER IN ZOOLOGY
IN THE UNIVERSITY

ILLUSTRATED

LONDON

SMITH, ELDER & CO., 15 WATERLOO PLACE

1915

[All rights reserved]

HENRICO ARTHURO ADEANE MALLET