Note 263 — ON PARASITES IN GENERAL. (continued 6)
Reading edition
Holostomata: Prostomata with (in addition to the oral and ventral suckers) a third fixation apparatus, generally on a separate part of the body.
Reading edition
Holostomata: Prostomata with (in addition to the oral and ventral suckers) a third fixation apparatus, generally on a separate part of the body.