Adults are large for caecilians (up to 600 mm total length for Guatemalan specimens from the Pacific versant) and relatively stout-bodied (Savage and Wake 2001). Dorsal coloration is dark gray, with a pale venter as well as pale jaw and tentacle markings (Wake 2003). Body annuli (94-112 primary folds and 35-88 secondary folds) are numerous. Annuli are also darkly pigmented ventrally, in sharp contrast to the pale venter (Savage and Wake 2001). The tentacle is located roughly halfway between the eye and nostril, with the tentacular foramen present in the anterior margin of the maxillary bone (Savage and Wake 2001). The orbit is not roofed over by squamosal bone (Savage and Wake 2001). Teeth are present in a single row on the lower jaw, since splenial teeth are lacking (Savage and Wake 2001).
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