sco·lex 
(skōlĕks′)
(skōlĕks′)n. pl. sco·li·ces (-lĭ-sēz′)
The knoblike anterior end of a tapeworm, having suckers or hooklike parts that in the adult stage serve as organs of attachment to the host on which the tapeworm is parasitic.
[New Latin scōlēx, from Greek skōlēx, worm.]
scolexof a tapeworm