The Collaborative International Dictionary of English v.0.48:

Serricorn \Ser"ri*corn\, a. [L. serra saw + cornu horn.] (Zool.)
   Having serrated antenn?.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Serricorn \Ser"ri*corn\, n. (Zool.)
   Any one of a numerous tribe of beetles (Serricornia). The
   joints of the antennae are prominent, thus producing a
   serrate appearance. See Illust. under Antenna.
   [1913 Webster]