Turbellarian taxonomic database
Faubel A 1976 (citation)- Definition of new family in abstract based on (p 17), also definition
and discussion of new family- type genus Antroposthia p 21-23:
1- antrum masculinum adjoins proximally and desicular granulosum.
2- absense of a penis.
Included are : Antroposthia Faubel 1974
Convoluella Faubel 1974
Adenopea Antoniums 1968
Unantra Faubel 1976
p 21-22 "diagnosis "acoela with a ventral mouth opening. Outer body wall with outer circular and
inner longitudinal muscles. A ciliated male atrium inserted into a penis sheath or sac as
a direct inpocketing of the epidermis. Proximally an unciliated grannular vesicle closes
it off directly. A seminal vesicle or false seminal vesicle present. Male gonopore ventral
or terminal at posterior end." These genera have a penis which is evolved from an antrum
masculinum (= an inpocketing of outer wall at the male pore without change in the epidermis).
Note penis in Convoluta convoluta is ciliated but secretory, so come really under
Graff's definition as "ductus ejaculatorus".