Ramphotyphlops, Fitzinger, 1843

Weinell, Jeffrey L., Hooper, Errol, Leviton, Alan E. & Brown, Rafe M., 2019, Illustrated Key to the Snakes of the Philippines, Proceedings of the California Academy of Sciences 66 (1), pp. 1-49 : 33

Ramphotyphlops

Key to Philippine species.

1a. Ocular scale overlaps third supralabial scale ( Fig. 44A )............ Ramphotyphlops marxi

1b. Third supralabial scale overlaps ocular scale ( Fig. 44B ).............................. 2a. Longitudinal scale rows around midbody 24–28............... Ramphotyphlops cumingii

2b. Longitudinal scale rows around midbody 20–22................................... 3

3a. Width of preocular scale about equal to width of ocular scale; width of rostral scale ~0.75 head width; nasal scale nearly, but not completely, divided........... Ramphotyphylops olivaceus

3b. Preocular scale much narrower than ocular scale; width of rostral scale about half the width of head; nasal scale completely divided......................... Ramphotyphlops suluensis

Figures

FIGURE 44. Lateral view of head of (A) Ramphotyphlops marxi (FMNH 96520; a redrafting by EH of original image in Wallach et al. 1993), (B) Ramphotyphlops suluensis (PBS 2001; a redrafting by EH of original image in Taylor 1918). Ocular scale (green), third supralabial scale (purplish-gray). Fig. A reproduced and modified with permission of V. Wallach and Journal of Herpetology.