Note 480 — Chapter XVI · LAND AND FRESH-WATER SHELLS.
Reading edition
In his paper Mr. Smith refers to the species experimented on as N. cornea: but in my own list he named a shell belonging to one of the Neritinæ in question as N. subsulcata.
[481] Cyclostoma elegans was the species tested: vide “Origin of Species,” p. 353, 6th edit.