191921 

 MEMOIRS OF 



THE CONNECTICUT ACADEMY 

 OF ARTS AND SCIENCES 



VOLUME VII DECEMBER, 1920 



The Appendages, Anatomy, and Rela- 

 tionships of Trilobites 



BY 



PERCY E. RAYMOND, Ph.D. 



ASSOCIATE PROFESSOR OF PALAEONTOLOGY, AND CURATOR OF INVERTEBRATE 



PALAEONTOLOGY IN THE MUSEUM OF COMPARATIVE ZOOLOGY, 



HARVARD UNIVERSITY 



NEW HAVEN, CONNECTICUT 



PUBLISHED BY THE 



CONNECTICUT ACADEMY OF ARTS AND SCIENCES 



AND TO BE OBTAINED ALSO FROM THE 



YALE UNIVERSITY PRESS 



