4. BENEDENIA. 



137 



the end of the process for there to be any resemblance between the 

 lateral processes of these genera and that of the genus PJii/sahis. 

 From what I have observed, I believe that no such change takes 

 place, and that the form of the processes and the situation of the 

 perforations aftbrd good characters for the separation of the species 

 into groups and the siiecies from each other. 



Fiff. 25. 



Fifth cervical vertebra of Benedenia E71 



Fig. 2G. 



First aud second ribs of Bencih-iiia Enoxii. 



