NUMBER 17 85
86 BULLETIN OF THE BIOLOGICAL SOCIETY OF WASHINGTON Gymnotidae Plate 13 A. Electrophorus electricus (live). MCNG 51982. Venezuela, Amazonas, Río Orinoco, 147 km SE <strong>of</strong> San Fernando de Atabapo, 03u189240N, 066u369120W, 4 Mar 2005, M. Sabaj, N. Lujan, M. Arce, & T. Wesley. Sternopygidae B. Sternopygus sp. (live). ANSP 189018 (146 mm TL). Suriname, Sipaliwini, Lawa River (Marowini drainage), ca. 8 km S-SW <strong>of</strong> Anapaike/Kawemhakan (airstrip), 03u199310N, 054u039480W, 18–22 Apr 2007, J. Lundberg, J. Mol, M. Sabaj, P. Willink, & K. Wan. Rhamphichthyidae C. Gymnorhamphichthys hypostomus (alcohol). INHS 49454 (161 mm LEA). Guyana, Potaro River (Essequibo drainage), beach on N bank, downstream <strong>of</strong> Tumatumari Cataract, 05u21948.40N, 59u00904.40W, 22 Oct 1998, M. Sabaj, J. Armbruster, & M. Hardman. Hypopomidae D. Hypopomus artedi (alcohol). ANSP 189266 (152 mm TL). Suriname, Sipaliwini, Lawa River (Marowini drainage), ca. 8 km S-SW <strong>of</strong> Anapaike/Kawemhakan (airstrip), 03u199310N, 054u039480W, 18–22 Apr 2007, J. Lundberg, J. Mol, M. Sabaj, P. Willink, & K. Wan. Apteronotidae E. Apteronotus albifrons (live). AUM 40678 (109 mm SL). Venezuela, Amazonas, Río Manapiare (Ventuari-Orinoco drainage), at San Juan de Manapiare landing, 15 Apr 2004, J. Para.