91 



This species is distinguished from ail others by the greater 

 leugth of the carapace iu proportion to its diameter and by the 

 shorter telson. These characters are obvious. Its general form 

 will readily distinguish it also. 



Of course, if it never had but two pair of palpi, this would be 

 a very marked and important distinction; but the parts preserved 

 are so much like Enrypierns, that we suppose there were four 

 piir and two have not been preserved. 



Found in the Waterline Group, at Kokomo, Indiana, and now 

 in the collection of Wm. F. E. Gurley. 



