Key to the species of the Lygosoma bampfyldei group

1. Ventral scale rows <104; adult SVL <130 mm ............................................................. 2

- Ventral scale rows> 103; adult SVL> 129 mm ......................................... kinabatanganensis sp. nov.

2. 3rd and 4th toe lamellae enlarged and fringe-like; dark frontal band reduced to eye patches; sides of tail red-orange............................................................................................... peninsulare sp. nov.

- 3rd and 4th toe lamellae keeled but not fringe-like; dark frontal band complete across top of head; tail olive to grey......... 3

3. Midbody scale rows 36–40; postinterparietal scale absent.............................................. bampfyldei

- Midbody scale rows> 40; postinterparietal scale present................................................ schneideri