140 On a Coenurus in the Rat 



The curve of the blade of the small hook of each Coenurus is from 

 moderate to strong. 



The guard is well developed in all three small hooks. Their shape in 



Hooks of a Copnunis from a rat. 

 each Coenurus is not so constant as that of the guards of large hooks. 

 Yet the guard of the small hook of the Coenurus from the rat is usually 

 almost cylindrical with a rounded tip. In the small hooks of C. cerehrahs 

 the guard is usually long and tapering, while in those of C. senalis it is 



