Jc. Walker et Wf. Ponder, A new genus and species of Planorbidae (Gastropoda : Heterobranchia : Pulmonata) from Northern Australia, J MOLLUS ST, 67, 2001, pp. 153-160
A new genus and species of Planorbidae, Kessneria papillosa n.gen, and sp,
from the Northern Territory. Australia, are described. The new genus is mor
phologically most similar to Leichhardtia. another genus restricted to Nort
hern Australia, from which it differs in a number of important shell and an
atomical characters. The shell of the new genus differs from all other plan
orbids in having a raised. papillate protoconch, and is also unique amongst
Australian high-spired genera in being umbilicate and in having a sinuate
outer lip.