A. C DiMON 



29 



to their length, and a shallower suture. Thoiigh the series is not in eacli case 

 a rcffular one, with the shells from 1 and 8 at the cxtremities aud those froni 2 

 intennediate, yct the gencral relationship holds. The tendency of the shells 

 früiii 2 toward an t'xtivine position i.s not necessarily inconsistent. Cooke ('95) 



TABLE I. 



Quantitative dafit. Table of Constants of the Curves. 



