Nomenclature : "
Partula sinistralis, Pease, MS" is cited in the synonymy of
P. otaheitana by Garrett (1884:
47) and is thus not available by this time. This author precise : "After passing to the westward of the range of the typical
sinistrorsa,
which presents the same features for a distance of ten or twelve miles,
it suddenly exhibits a tendency to a change in its becoming more
stunted, more solid, always dentated, and the bands, one to three, are
sharply defined on a pale ground. It is the
sinistralis of Pease, MS.,
and occupies two valleys". Pilsbry (1909) considered the name available as he established
Partula nodosa laeva as a new name to solve the homonymy of
Partula nodosa var.
sinistralis Mayer, 1902. However, he did not use it as a valid name. Thus Crampton (1917) was the first to make this name available under the form "
Partula otaheitana sinistralis Pease"; authority must be attributed to Garrett, 1884.
