Atractus nigriventris Amaral, 1932 .

Holotype ILS 82 (= actual number MLS 234) (fig. 38), female. “Chita”, Boyacá, Colombia. May 1932.

Remarks: The specimen is housed at MLS collections, although the original description mentions its repository as the Butantan Institute. Specimen MLS 234 is hydrated, presents a slight deterioration and badly mounted.