The Cambridge natural history, Vol. 07 (of 10)

by George Albert Boulenger; T. W. Bridge; Sir W. A. Herdman

THE

CAMBRIDGE NATURAL HISTORY

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

HEMICHORDATA

By S. F. Harmer, Sc.D., F.R.S., Fellow of King's College, Cambridge.