Character Information: Proximal End

Stephanthus antarcticus gen. nov., sp. nov. B, C. Paratype (ZMH C11681), lateral and aboral view, respectively; note the rounded aboral end.Scale bar 20mm Permission to display image requested from copyright holder, reply pending.
Physa-like Fig. 1.-Side view of animal x 3 diam.
Forms a more or less well-developed flat pedal disc
Fig. 1.-Porponia antarctica; A from the side, B from the disc.
Forms a broad pedal disc
d-f, Nectothela lilae Verrill: d-e, expanded and partially contracted, respectively (x 2)