amphirhina

from The Collaborative International Dictionary of English v.0.48

Amphirhina \Am`phi*rhi"na\, n. pl. [NL., fr. Gr. 'amfi` + ?, ?,
   nose.] (Zool.)
   A name applied to the elasmobranch fishes, because the nasal
   sac is double.
   [1913 Webster]