CALLIOBDELLA LOPHII, VAN BENEDEN AND HESSE. 83 



more than twice the maximum breadth of the body, distinguishes this 

 species from the other (or others). Ludwig Johamison,* who describes 

 this leech as rare, admits that he has never seen one alive, and states 

 that the one in the museum at Stockholm was taken at Bergen in 1879^ 

 also that it occurs on the coast of Norway, and the two specimens he 

 dissected were sent by a fisherman from Helso in S. Bohuslan. He, 

 adopting the altered name Callobdella, characterizes the genus by its 

 possessing a large copulatory organ with a bursa and two seminal vesicles, 

 while in other genera the copulatory organ is without the latter. 



* Johannson. "Die Ictlivobdelliden in Zool. Reichmuseum in Stockholm, 1896." 



