Sibon dunni (Dunn's Snail Suckers)
Sibon dunni Peters, 1957
This species differs from other species of Sibon by the following combination of characters: (1) 15 dorsal scale rows; (2) six supralabials, the sixth larger than the rest; 3) presence of a single supralabial posterior to the last one entering the orbit; (4) 8–9 infralabials, one pair of them in…
