Source : Webster's Revised Unabridged Dictionary (1913)

Streptoneura \Strep`to*neu"ra\, n. pl. [NL., fr. Gr. ? curved +
   ? a sinew.] (Zo["o]l.)
   An extensive division of gastropod Mollusca in which the loop
   or visceral nerves is twisted, and the sexes separate. It is
   nearly to equivalent to Prosobranchiata.