[[ Phreatobius sanguijuela new species]]

Note added in proof

Subsequent to the correction of proofs for this paper, we became aware of the publication of a new Brazilian species of Phreatobius ^ZBK (Shibatta et al., 2007). The new Brazilian species is apparently not conspecific with the Bolivian species described here, based on the following differences: total vertebrae 45-46 (versus 48-49) [note: reported data for the Brazilian species is adjusted to correspond with our method for counting vertebrae]; 14-16 ventral procurrent caudal-fin rays (versus 11-13); 4 pectoral-fin rays (versus 5); first anal-fin pterygiophore on vertebra 18 (versus 16-17). Shibatta O.A., J. Muriel-Cunha & M.C.C. de Pinna 2007. A new subterranean species of Phreatobius Goeldi, 1905 ^ZBK (Siluriformes, Incertae sedis) from the southwestern Amazon basin. Papeis Avulsos de Zoologia 47(17), 191-201.