KEY TO SUBGENERA OF ENCHODELUS

1. Tail hemispherical or bluntly conoid ........................................2

Tail short-conoid or elongate-conoid ......................................... 3

2. Odontostyle fairly long; odontophore with broad basal flanges ........ ... Enchodelus

Odontostyle short; odontophore without basal flanges ................... ...Rotundus

3. Lip region not set-off from body; female gonads with unique ovoid chamber................................................................ Heterodorus

Lip region slightly or distinctly set-off from body; unique ovoid chamber absent ... 4

4. Odontostyle over 50 μm; odontophore with moderately developed basal flanges ....................................................................... Nepalus

Odontostyle under 50 μm; odontophore rod-líke or with very poorly developed basal flanges ......................................... Paraenchodelus