1.
NOTES ON A SMALL COLLECTION OF HELICOID LAND SHELLS FROM THE SHOUTEN ISLANDS, DUTCH NEW GUINEA, WITH DESCRIPTIONS OF TWO NEW SPECIES OF PAPUINA
2.
LII.— List with notes on some land-shells from the Island of Muswar, Dutch New Guinea, and descriptions of new species and varieties of Planispira (Cristigibba), Papuina, Calycia,...