Genus: Isognomon
Item count: 5
| Species | Occurrence | Authority | Contributors |
|---|---|---|---|
| ephippium | Andaman & Nicobar Islands | (C. Linnaeus, 1758) | Subba Rao, N.V. |
| isognomum | Tamil Nadu (Gulf of Mannar), Andaman & Nicobar Islands | (C. Linnaeus, 1758) | Subba Rao, N.V. |
| legumen | Tamil Nadu (Gulf of Mannar), Andhra Pradesh, (Visakhapatnam), Orissa Ioff Ganjam coast) | (J.F. Gmelin, 1791) | Subba Rao, N.V. |
| nucleus | Tamil Nadu (Gulf of Mannar), Andhra Pradesh, (Visakhapatnam), Andaman & Nicobar Islands, Andaman & Nicobar Islands | (J, B.P. de M. Lamarck, 1836) | Subba Rao, N.V. |
| pernum | Andaman & Nicobar Islands | (C. Linnaeus, 1767) | Subba Rao, N.V. |