Energy-Dispersive X-ray Spectra (EDXS) of anterior hooks of Profilicollis rancoensis n. sp. cystacanths from Aegla abtao in Chile, acquired from the edge of a tip hook (23), the center of the middle section of the hook (24), and the center of the base of the hook (25), where the red inlays indicate the region from where the spectra were obtained. The spectra show the raw number of counts collected, and the elements C, O, P, S, Ca peaks highlighted. See Table 4 for EDXA numerical detail. Insets point to parts of hooks used to generate spectra.