Isthmomys flavidus (Bangs, 1902) . Bull. Mus. Comp. Zool., 9:27.

TYPE LOCALITY: Panama, Chiriqui Prov., Volcan de Chiriqui, Boquete .

DISTRIBUTION: Intermediate elevations in W Panama (Chiriqui region) and on Azuero Peninsula (see Handley, 1966a).

COMMENTS: Whether I. pirrensis is a junior synonym of I. flavidus, as opined by Hooper (1968b), has yet to be assessed.