Melanomys caliginosus (Tomes, 1860) . Proc. Zool. Soc. Lond., 1860:263.

TYPE LOCALITY: Ecuador, Esmeraldas Prov., Esmeraldas .

DISTRIBUTION: C American lowlands from easternmost Honduras through Panama; in South America, N and W Colombia to extreme NW Venezuela and to SW Ecuador.

SYNONYMS: affinis, buenavistae, chrysomelas, columbianus, idoneus, lomitensis, monticola, obscurior, olivinus, oroensis, phaeopus, tolimensis, vallicola.

COMMENTS: Chromosomal complement described by Gardner and Patton (1976).