Comparison of the Nasal Olfactory Organs of Various Species of Lizardfishes (Teleostei: Aulopiformes: Synodontidae) with Additional Remarks on the Brain

Figure 1

The genera of the studied lizardfishes, the olfactory nares, and olfactory rosettes. (a) Trachinicephalus myops; (b) Synodus variegatus; (c) Saurida tumbil, scale bar = 1.5 cm; (d) dorsal skull surface of Trachinocephalus myops, scale bar = 4 cm; (e) external nares of Sy. variegatus, scale bar = 0.8 mm; (f) open nasal capsule of Sy. saurus, scale bar = 3 mm; (g) internal nares of Sy. variegatus, scale bar = 1.5 mm; (h) olfactory rosette of Sy. kaianus, scale bar = 4 mm; (i) One site of the olfactory rosette of T. myops, scale bar = 0.8 mm: an, anterior nare; c, olfactory capsule with rosette; cp, inner cover of olfactory capsule; e, eye; g, lines of mucus gland cells; in, inner nares; l, olfactory lamellae; o, deeper part of the olfactory capsule; p, anterior part of the palate; pn, posterior nare; r, ridges on the head; ra, raphe of rosette; t, teeth of upper jaw; star, passages for water transport; arrows, swollen margins of olfactory lamellae.