ASCARIS DECIPIENS. 



117 



A. ca2}SHlari(i is probably a collective desiguutioii, including the young stages of a 

 numbei" of distinct si)ecies of Ascoria, and would thus from a biological standpoint 

 nearly correspond to such expressions as Agamodistomum, Cysticercus. etc. 



Fiff. 18. 



The young stages (figs. 20-22) in the fur seal attained li"'"' or more in length 

 by about 0.528""" in diameter, and possessed a finely traversely striated cuticle. 

 The head is provided with a well-developed spine, ventral of the round mouth, and 

 four papillae; in some specimens the cuticle was being cast, and within it the three 



