Kadallu language
Kadallu is a poorly attested Gumuz language of southeastern Sudan. It is known only from two short word lists. It is spoken on the Blue Nile in the southeastern corner of Sudan, in the area surrounding Ad-Damazin and Er Roseires, and just south-southeast of Famaka near the Ethiopian border.
Dimmendaal et al. note that "Kadallu is a language spoken in the Republic of Sudan which is currently listed as an alternate name for Gumuz in the Ethnologue. However, from examining existing word lists we suspect that Kadallu is a distinct language." The short list of words collected by Juan Maria Schuver was recently published along with Schuver's papers concerning his travels along the Sudan-Ethiopia border.