The Collaborative International Dictionary of English v.0.48:

Apneumona \Ap*neu"mo*na\, n. pl. [NL., fr. Gr. 'a priv. + ?, ?,
   a lung.] (Zool.)
   An order of holothurians in which the internal respiratory
   organs are wanting; -- called also Apoda or Apodes.
   [1913 Webster]