FIGURE 6 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 6 (A–D). Right lateral views of four species of Stegonotus as photographs (upper images) and line drawings (lower images), illustrating the position of supralabial scales (SL) and the eye. (A, A') S. ayamaru sp. nov. (holotype, RMNH.RENA 31199), showing SL = 7 and a 3+4+5 pattern with SL5 projecting forward from a position behind the eye to form a narrow contact zone with the eye. (B, B') S. batjanensis (holotype, BMNH 1946.1.11.36), showing SL = 8 and a 3+4+5 pattern with SL3 projection backwards from a position in front of the eye to form a narrow contact zone with the eye. (C, C') S. florensis (holotype, ZMA 11080), showing SL = 9 and a 3+4+5 pattern similar to S. batjanensis. In this specimen, SL5 displays a developmental aberration on both sides of the head by being divided into two scales (as indicated by red stippling). (D, D') S. sutteri (holotype, NMBA 14872), showing SL = 9 and a 3+4+5 pattern similar to S. batjanensis and S. florensis.