Cryptotis nigrescens (J. A. Allen, 1895) . Bull. Am. Mus. Nat. Hist., 7:339.

TYPE LOCALITY: "San Isidro (San José), Costa Rica " .

DISTRIBUTION: Tropical lowland of Yucatan Peninsula and highlands of Guerrero, Chiapas and Las Margaritas (Mexico), also highlands of Guatemala, El Salvador, Honduras, Costa Rica, and Panama.

SYNONYMS: mayensis, merriami, merus, micrura, tersus, zeteki.

COMMENTS: There are three distinct subspecies ( nigrescens, mayensis, and merriami; see Choate, 1970); N. Woodman and R. Timm (pers. comm.) believe the latter two are valid species.