FIGURE 21 in Illustrated Key to the Snakes of the Philippines

FIGURE 21. Lateral view of head of (A) Indotyphlops braminus (specimen number unknown; redrawn from Taylor 1922a), (B) Ramphotyphlops cumingii (EHT R-99; a redrafting by EH of original image in Taylor 1919). Second supralabial scale (purplish-gray); preocular scale (green); nspo = nasal suture posterior origin scale.