Abstract

A study of the ear of Basiliscus basiliscus by both anatomical and electrophysiological methods reveals many points of resemblance to other iguanids. The auditory sensitivity, as measured in terms of the cochlear potentials, falls within the range of other iguanid species that have been observed in the same manner. The anatomical similarity with other iguanids includes the form of the tectorial membrane and its connection by way of a fiber plate to the ciliary tufts of a limited group of hair cells. An outstanding difference, however, is the presence in this ear of two basilar membranes lying end to end, with each membrane bearing a separate auditory papilla.

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