268 



PROCEEDINGS OP THE AMERICAN ACADEMY. 



EXPLANATION OF PLATES. 



All the figures in Plates 1-5, and 8, except Figures 19, 20, and 68, represent 

 preparations from Clymene producta. Figures 19, 20, and 68, and all the Figures 

 of Plates 6 and 7 represent preparations from Axiothea torquata. 



The magnification of all the giant cells is 1000 diameters, and the method of 

 preparation, unless otherwise stated, was by the vom Rath mixture, defined 

 at page 232. 



All figures were drawn with the aid oi the Abbe camera lucida. 



ABBREVIATIONS. 



