loss of zooecia, [481], (= calyces), [488];
primary, [506];
alterations with age, [522]
Zooid, sexual and asexual, [278] f.
END OF VOL. II
PREVIOUS VOLUMES OF
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.