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Figure 12 | BMC Evolutionary Biology

Figure 12

From: Consuming viscous prey: a novel protein-secreting delivery system in neotropical snail-eating snakes

Figure 12

Head muscles and glands of Dipsadinae. Lateral view of the head of Atractus major (IBSP 43395) (A), Adelphicos veraepacis (KU 187320) (B), and Geophis zeledoni (KU 63822) (C), showing location of the infralabial gland (il) with respect to the head muscles and mandible. Abbreviations: aem2, muscle adductor mandibulae externus medialis; aep, muscle adductor mandibulae externus profundus; aes, muscle adductor mandibulae externus superficialis; ap.aes, aponeurose of muscle adductor mandibulae externus superficialis; Hg, harderian gland; ipp, muscle intermandibularis posterior pars posterior; lao, muscle levator anguli oris; sl, supralabial gland. Scale bar in all pictures = 5 mm.

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