TRAHSACTIOSS OF THE 



CONNECTICUT ACADEMY OF ARTS AND SCIENCES 



Incorpokated a. D. 17£ 



VOLUME 21, PAGES 145-200 FEBRUARY, 1917 



The Relationship 



of the 



Tetracoralla to the Hexacoralla 



BY 



W. I. ROBINSON 



NEW HAVEN, CONNECTICUT 

 1917 



