Source : Webster's Revised Unabridged Dictionary (1913)

Neritina \Ner`i*ti"na\, n. (Zo["o]l.)
   A genus including numerous species of shells resembling
   Nerita in form. They mostly inhabit brackish water, and are
   often delicately tinted.

Source : WordNet®

neritina
     n : ornately marked and brightly colored snails of brackish
         waters