H. marmorata. H. ovata, striis longitudinalibus, transversis obsoletis.
H. asinina. H. oblonga, extra foramina angulata, striis elevatis.
H. parva. H. ovata, angulo inter foramina et spiram.
All the headings in this genus are similar to those in the 'Systema'.
PATELLA.
Testa conica, convexa. Spira regularis nulla vera.
The limits of this genus were precisely those of the printed edition.
P. equestris. P. ungue fornicali nutante.
P. neritoidea. P. integra ovata, apice subspirali, labio laterali.
"Supra" preceded "convexa", and the "fere" was before "apice".