A detailed redescription of the larval morphology of the ceratophryid frog Chacophrys pierottii is presented with an account of the pattern of lateral-line organs and comments on larval biology. Variation in the nasal appendix, a unique feature of Chacophrys tadpoles, is described. Comparisons are made with larvae of two closely related genera, Ceratophrys and Lepidobatrachus. In contrast to members of these genera, which have highly modified carnivorous larvae, the larvae of Chacophrys pierottii resemble typical Type IV tadpoles. However, the larvae of all ceratophryid genera possess uninterrupted marginal papillae surrounding the oral disc.
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Vol. 1 • No. 3