FIGURE 7 in A new species of Indo-Papuan groundsnake, genus Stegonotus Duméril et al., 1854 (Serpentes, Colubridae), from the Bird's Head Peninsula of West Papua, Indonesia, with comments on differentiating morphological characters

FIGURE 7 (A–D). Dorsal head views of four species of Stegonotus, shown to illustrate the position of measurements, sutures, and angles as explained in Fig. 2. The placement of AE in A'–H' documents the position of the eyes relative to the anterior border of the frontal. The yellow line in A'–H' shows the lateral ray of AP /. (A, A') S. ayamaru sp. nov. (holotype, RMNH.RENA 31199). (B, B') S. batjanensis (holotype, BMNH 1946.1.11.36). (C, C') S. florensis (holotype, ZMA 11080). (D, D') S. sutteri (holotype, NMBA 14872), showing a forward extension of the anterior border of the frontal.