442 THE AMEEICAX XATURALIST [Voi. LVI 



different species from Dibothriwn cordiceps Leidy, the 

 ones discussed by Linton. According to Professor A. R. 

 Cooper, of the University of Illinois College of Medicine, 

 to whom specimens of the tapeworm larvae were sent for 

 identification, " the placing of these larvae specifically is 

 a matter of the working out of the life histories of the 

 species in question." 



The larval tapeworms under consideration may be en- 



