Gastroptychia, Kobelt & Mollendorff, 1900

Key to the Gastroptychia View in CoL from northeastern India

1 Shell height larger than 5 mm....................................... Gastroptychia insignis ( Godwin-Austen, 1870) View in CoL

- Shell height smaller than 5 mm.......................................................................... 2

2 Ribs of the teleoconch dense (> 5 ribs per 0.5 mm on the body whorl).................. Gastroptychia geoffreyi View in CoL sp. nov.

- Ribs of the teleoconch spaced (> 5 ribs per 0.5 mm on the body whorl)........................................... 3

3 A palatal swelling and a palatal lamella present ..................................... Gastroptychia collicola View in CoL sp. nov.

- Horizontal palatal lamella absent........................................................................ 4

4 Shell height larger than 3 mm....................................... Gastroptychia gibbosa (W. T. Blanford, 1868) View in CoL

- Shell height smaller than 3 mm.......................................................................... 5

5 Approximately 9 ribs on the penultimate whorl when view from the aperture side................................................................................................ Gastroptychia gibberosa ( Godwin-Austen, 1892) View in CoL

- Approximately 13 ribs on the penultimate whorl when view from the aperture side................................................................................................. Gastroptychia jaintiaca ( Godwin-Austen, 1870) View in CoL