112 TERRESTRIAL MOLLUSCA INHABITING SOCIETY ISLANDS. 
Helicina Kusteriana, Pfeiffer. “Tahiti.” I doubt this and the following being 
Tahitian species. 
Helicina bicolor, Pfeiffer. ‘* Tahiti.” 
Auricula viola, Lesson. ‘ Borabora.” 
In addition to the species unknown to me, I may mention the following Purtule : 
P. compressa, Pfeiffer. ‘Society Islands.” Referred by Carpenter to P. radiata. 
Dr. Hartman records it as a distinct species inhabiting the “ Fiji Islands” — Viti 
Isles. 
P. solidula, Reeve. “Society Islands.” Referred by Carpenter to P. virginea, and 
by Dr. Hartman to P. lutea. This and the following are undoubtedly synonymous 
with some of the species recorded in this paper. 
P. simplaria, Morelet. “Tahiti” Referred by Mousson to P. varia, and by Dr. 
Hartman to P. rosea. 
P. Erhelii, Morelet. “Morea, Society Islands.” Dr. Hartman thinks this will 
prove to be one of the forms of P. teniata, 
P. stenostoma, Pfeiffer. “Habitat... .’ Dr. Hartman refers it to P. vexillum 
= lineata. 
P. suturalis, Pfeiffer. “Habitat... .% Referred by Dr. Hartman to P. 
strigosa = lineata, var. 
