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Family Planoceridae Lang, 1884


Body variable in outline, pharynx ruffled, it and mouth central. Copulatory apparatus behind pharynx but anterior to male pore, with cirrus with 'hard' lining usually spinous, prostatic vesicle free: gonopores separate.

Type genus

Planocera Blainville, 1828.


Aquaplana Hyman, 1953
Disparoplana Laidlaw, 1903
Paraplanocera Laidlaw, 1903
Planocera Blainville, 1828
Planocerodes Palombi, 1936.


Includes several planktonic species.

Family Planoceridae