The Nautilus. Vol. XXXI, No. 2, October 1917 / A Quarterly Journal Devoted to the Interests of Conchologists

by Various

Strophia incanum (Binn.).

Pupoides modicus (Pfr.).

Gastrocopta pentodon (Say).

Gastrocopta rupicola (Say)?

Gastrocopta pellucida hordeacella (Pils.).

Gastrocopta pellucida hordeacella (Pils.) var. Small form.

Thysanophora incrustata (Gld.).

Thysanophora granum (Streb.).

Thysanophora dioscoricola (Guppy).

Guppya gundlachi (Pfr.).