Hybopsis biguttatus

from The Collaborative International Dictionary of English v.0.48

Hornyhead \Horn"y*head`\, n. (Zool.)
   Any North American river chub of the genus {Hybopsis}, esp.
   {Hybopsis biguttatus}.
   [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Jerker \Jerk"er\, n.
   [1913 Webster]
   1. A beater. [Obs.] --Beau. & Fl.
      [1913 Webster]

   2. One who jerks or moves with a jerk.
      [1913 Webster]

   3. (Zool.) A North American river chub ({Hybopsis
      biguttatus}).
      [1913 Webster]

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