. The freshwater fishes of British Guiana, including a study of the ecological grouping of species and the relation of the fauna of the plateau to that of the lowlands . 1. Centromochlusaulopygius Kner. 65 mm. No. 1727. 2. Psendauchenipterus nodosus (Bloch). 3. Tympana pleura pipcrata Eigenmann. (Type.) (>4 mm. No. 1708. No. x: x H >o 3Wco ow Z o CO.

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Keywords: ., bookauthoreigenman, bookcentury1900, bookdecade1910, bookyear1912