Two high-resolution, high signal-to-noise ratio C-star spectra for which (J − K_s) ≃ 1.85. Only the top spectrum exhibits the 1.53 μm feature. It also appears smoother in the near-infrared than the bottom one, and it has a peculiar energy distribution. The gray bands mask the regions where telluric absorption is strongest. The areas hatched in black are those that could not be corrected for telluric absorption in a satisfactory way. The areas hatched in gray are the merging regions between the VIS and NIR spectra, and between the last two orders of the NIR part.