Figure 3. Scanning electron photomicrographs show the scale microstructure in P. urarachnoides : upper Head scales (A, ~100X , B, 1000X and C, 8000), caudal appendage (D, ~100X), and knob-like structure (E, ~100X and F, 5000X).
The microstructure of head and mid-body dorsal scales inEristicophis macmahonii resemble a lattice-like structure. However, the depressions in these net-like structures are more or less roundish on head but elongated and more or less diamond-like on the mid-body scales. Tiny spicules are observed on the surface of both head and mid-body scales (Figure 4).