Carlos David de Santana

Predoctoral Fellow, Division of Fishes, Department of Vertebrate Zoology, MRC-159, National Museum of Natural History, P.O. Box 37012, Smithsonian Institution, Washington, D.C. 20013-7012. Present address: Instituto Nacional de Pesquisas da Amazônia, Av. André Araújo, 2936 Manaus, AM, 69060-001, Brazil;