Fig. 1. Examples of electric pulses produced by three morphs of the magnostipes complex. (A) Time-domain EOD waveforms of multiple individuals. All voltage traces are standardized to the same peak-to-peak amplitude, plotted as overlays of waveforms recorded from N unique individuals and aligned by their head-positive peaks (with head-positivity up). Type III waveforms (all from a site near the village Na) were recorded in previous studies (Sullivan et al., 2004; Arnegard et al., 2005). (B) Power spectra calculated for the same EODs. Red voltage traces and power spectra correspond to DC recordings (bandwidth 0-50 kHz). All other recordings in black were AC-coupled (bandwidth 0.1 Hz-50 kHz). AC-coupling did not detectably alter type I and type II female-like EODs relative to DC recordings. Some measurements of EOD power spectra (also extremely similar between morphs) were previously provided for Ivindo River type I and type II females and non-breeding males by Hopkins, who referred to them as Hippopotamyrus batesii `reverse polarity' and H. batesii `triphasic', respectively (Hopkins, 1981). Note also that Hopkins shows a breeding male EOD of the type I morph in the right column of his fig. 2 (Hopkins, 1981).