A TREATISE ON ZOOLOGY 



EDITED BY 



E. RAY LANKESTER, M.A., LL.D., F.R.S. 



HON. FELLOW OF EXETER COLLEGE, OXFORD J CORRESPONDENT OF THE INSTITUTE OF FRANCE J 

 LATELY DIRECTOR OF THE NATURAL HISTORV DEPARTMENTS OF THE BRITISH MUSEUM. 



In Demy 8vo. Illustrated. Bound in cloth, price 15s. each part net ; 

 paper in paper covers, price 12s. 6d. each part net. 



[Part IX. [First Fascicle), -price 20.y. net and 15$. net. ) 

 Postage additional: cloth 6d., paper covers ^d. per copy. 



VOLUMES READY 



on thin 



Part I. (First Fascicle). 

 INTRODUCTION AND PROTOZOA. 



ByS. J. Hickson, M.A., F.R.S. , F. W. 

 Gamble, D.Sc, F.R.S., J. J. Lister, 

 F.R.S., H. M. Woodcock, D.Sc, and 

 the late Professor Weldon, F.R.S. 



Part I. (Second Fascicle). 



INTRODUCTION AND PROTOZOA. 



By J. B. Farmer, D.Sc, F.R.S., 

 J. J. Lister, M.A., F.R.S., E. A. 

 Minchin, M.A., F.Z.S., S. J. 

 Hickson, F.R.S. 



Part II. 



THE PORIFERA AND COELENTERA. 



By E. A. Minchin, M.A., F.Z.S., 

 G. Herbert Fowler, B.A., Ph.D., 

 and Gilbert C. Bourne, M.A. 



Part III. 

 THE ECHINODERMA. By F. A. 



Bather, D.Sc, F.G.S., assisted by 

 J. W. Gregory, D.Sc, F.R.S., and 

 E. S. Goodrich, M.A., F.R.S. 



Part IV. 

 THE PLATYHELMIA, MESOZOA, 



AND NEMERTINI. By W. B. Benham, 

 D.Sc, M.A., F.R.S. 



Part V. 

 MOLLUSCA. By Paul Pelseneer, 

 D.Sc. 



Part VII. (Third Fascicle). 

 APPENDICUUTA (CRUSTACEA). 



By W. T. Calman, D.Sc. 



Part IX. (First Fascicle). 



VERTEBRATA CRANIATA (Cyclo= 



stomes and Fishes). By E. S. Good- 

 rich, M.A., F.R.S. Cloth, price 20s. 

 net. Paper, price 15s. net. 



SCOPE OF THE WORK. 



This comprehensive treatise on Zoology has been for some time in preparation under 

 the editorship of Professor Lankester. Each of the larger groups of the Animal Kingdom 

 is to be described by a separate author ; whilst, as far as possible, uniformity in method 

 and scope of treatment are aimed at. The authors are, for the most part, graduates of 

 the University of Oxford, though it may not be possible to maintain this limitation in 

 future sections of the work. 



The general aim of the treatise is to give a systematic exposition of the characters of 

 the classes and orders of the Animal Kingdom, with a citation in due place of the families 

 and chief genera included in the groups discussed. The work is addressed to the serious 

 student of Zoology. To a large extent the illustrations are original. A main purpose of 

 the Editor has been that the work shall be an independent and trustworthy presentation, 

 by means of the systematic survey or taxonomic method, of the main facts and conclusions 

 of Zoology, or, to speak more precisely, of Animal Morphography. 



The treatise will be completed in> ten parts. It will at once be apparent that this 

 limitation necessitates brevity in treatment which, however, will not, it is believed, be 

 found inconsistent with the fulfilment of the scope proposed, or with the utility of the 

 work to students. 



PUBLISHED BY A. & C. BLACK, SOHO SQUARE, LONDON, W. 



