SOME NEW PEXTASTOMIDS. 



117 



papillae in front of the mouth in P. armillatus are replaced by a 

 small lobe. 



(3) The hooks are sunk in a pit and not so wide apart ; the 

 space between the two inner hooks is also relatively greater. 



Text-figure 2. 



r-o 



PorocepJialus grandis. 



Female specimen dissected from the ventral side, slightly enlarged. 



int., intestine ; l.o., cut end of left oviduct ; ov., ovary ; r.o., right oviduct ; 

 sp., spermatheca ; ut., uterus. 



(4) The rings are not so sharply defined. In the female there 

 are 22 distinct ones and 2 or 3 indistinct, instead of 19 altogether, 



