The Collaborative International Dictionary of English v.0.48:

Allice \Al"lice\, Allis \Al"lis\, n. (Zool.)
   The European shad (Clupea vulgaris); allice shad. See
   Alose.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

allis \allis\ n.
   1. a European shad, (Alosa alosa).

   Syn: allice shad, allis shad, allice
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

allis
    n 1: European shad [syn: allice shad, allis shad, allice,
         allis, Alosa alosa]