This species has been reported in Middle America from as far north as southern México. It evidently is uncommon in Costa Rica (see Gardner _et al._, 1970:722) and Panamá (Handley, 1966b:767). Our material, all collected from mist nets and consisting of 16 specimens from the northwestern department of Chinandega and one from Isla de Ometepe in Lago de Nicaragua, constitutes the first report of this bat from Nicaragua. Four of five females taken in early March were pregnant; embryos averaged 26.0 (25-29) mm in crown-rump length. Four females taken in July carried embryos 14, 20, 23, and 25 mm in length. Testes of five adult males captured in March and April had an average length of 4.4 (3-7) mm, whereas those of two taken in July were 3 mm in length. Artibeus toltecus hesperus Davis, 1969 When Davis (1969) named _A. t. hesperus_, he assigned specimens only from as far south as El Salvador to the new subspecies, referring the three Nicaraguan examples of the species at his disposal to the nominal race. On the night of 6-7 April 1968, one of us (Smith) netted bats on the south part of Isla de Ometepe at a place 2 km N and 3 km E Mérida, 200 meters in elevation. One net was set across, and another parallel to, a small, boulder-strewn stream; the surrounding area was planted to coffee and had a good canopy of tall deciduous trees. Among the bats captured at this location were 10 _A. toltecus_ that are referable to the subspecies _hesperus_, judging by their small size (Table 2). Six of our specimens are females and each carried an embryo (range in crown-rump length 20-28 mm). Three adult males had testes 5, 6, and 7 mm in length. External measurements (extremes in parentheses) of our series are: total length, 55.9 (51-60) mm; length of hind foot, 10.7 (10-12) mm; length of ear, 14.8 (14-16) mm; weight of four males, 9.9 (8.8-11.5) gms; weight of six pregnant females, 14.9 (12.7-16.9) gms. TABLE 2.--Selected measurements of two subspecies of _Artibeus toltecus_ from Nicaragua. Table Legend: Col. A: Number of specimens averaged and sex Col. B: Length of forearm Col. C: Greatest length of skull Col. D: Zygomatic breath Col. E: Mastoid breadth Col. F: Length of maxillary toothrow ============================================================ A B C D E F ------------------------------------------------------------ _Artibeus toltecus toltecus_, Departamento de Matagalpa Average 6 40.3 20.3 12.1 10.7 6.6 (3[Male], 3[Female]) Minimum 38.8 19.8 11.8 10.5 6.5 Maximum 41.5 20.5 12.5 10.9 6.8 _Artibeus toltecus hesperus_, Isla de Ometepe, Rivas Average 10 38.0 19.4 11.5 10.2 6.3 (4[Male], 6[Female]) Minimum 37.0 18.8 11.2 9.8 6.1 Maximum 39.7 19.8 11.8 10.5 6.5 ------------------------------------------------------------