The ostium is encircled by three dorsal teeth. The middle one is triangular with a pointed tip, while the two dorso-lateral ones are positioned close to the median tooth. These dorso-lateral teeth are larger, also triangular, but with blunt tips. Additionally, there are smaller triangular lateral teeth. The mouth-plates are large and feature two tooth-like structures on their inner proximal surfaces. A commissural canal is present. The ostial teeth are similar in number, shape, and arrangement to those of the anterior nectophore. The mouth-plate is long and wide, remaining undivided, and it has a small notch in the distal margin. Two tooth-like processes can be found on the inner proximal surface.