TREATISE ON ZOOLOGY 



EDITED BY 



LANKESTER 



M.A., LL.D., F.RS. 



HONORARY FBLLOW OF EXETER COLi-r-QE, OXFORD ; CORRESPONDENT OF THE INSTITUTE 



OF FRANCE ', DIRECTOR OF THE NATURAL HISTORY DEPARTMENTS 



OF THE BRITISH MUSEUM 



PAKT II 



THE POKIFERA AND COELENTEKA 



BY 



E. A. MINCHIN, M.A. 



PROFESSOR OF ZOOLOGY IN UNIVERSITY COLLEGE, LONDON 



G. HERBERT FOWLER, B.A., Ph.D. 



LATE ASSISTANT PROFESSOR OF ZOOLOGY IN UNIVERSITY COLLEGE, LONDON 

 AND 



GILBERT C. BOURNE, M.A 



FELLOW AND TUTOR OF NEW COLLEGE, OXFORD 



WITH AN INTRODUCTION BY 

 E. RAY LANKESTER 



LONDON 



ADAM & CHAKLES BLACK 

 1900 



