Paradiso (1967) reviewed geographic variation in this unique bat, the type locality of which was restricted to Realejo, Chinandega, Nicaragua, by Goodwin (1946:327). Because additional material had not been reported from Nicaragua, Paradiso (_op. cit._:598) felt it was "premature to restrict the type locality to a specific area in that country" (the holotype was obtained on the voyage of the H.M.S. Sulphur, which called at Realejo), and preferred the more general designation "west coast of Mexico or Central America." In view of the fact that we now have specimens from but a few miles distant from Realejo (at San Antonio), we see no reason to contest Goodwin's restriction of the type locality to that place. Specimens from San Antonio were collected along a small stream, bordered by a bilevel gallery forest, in an area otherwise planted mostly to cane. Many trees of the lower level were covered by an extremely thick network of vines, which were interwoven with branches and supported fallen leaves and debris from the upper level. This situation led to formation of small "rooms" or "cubicles" under some shorter trees; the bats were shot as they hung from small branches under one such tree, which was in fruit. All of our other specimens were captured in mist nets. Pregnant females were taken on the following dates (crown-rump length of embryo in parentheses): 25 February (12 mm), 2 March (17 mm), 15 March (14 mm); a nonpregnant female also was taken on 15 March. Five males captured at San Antonio on 9 and 10 March had an average testicular length of 5.6 (5-6) mm. A male taken in July had testes 4 mm in length, whereas those of one obtained on 14 March were 5 mm long. Selected measurements (average, with extremes in parentheses) of 11 adults (seven males and four females) are as follows: length of forearm, 42.5 (41.5-43.7) mm; condylobasal length (10 specimens only), 14.8 (14.5-15.0) mm; zygomatic breadth, 14.8 (14.4-15.1) mm; interorbital breadth, 5.0 (4.7-5.2) mm; breadth across upper molars, 10.6 (10.5-11.0) mm; length of maxillary toothrow, 5.0 (4.8-5.3) mm. These measurements generally agree with those given by Paradiso (1967:600) for 20 individuals from Panamá. Females in our series average slightly larger than do males in external and cranial measurements. Six males weighed an average of 22.9 (20.7-25.1) gms; one nonpregnant female weighed 17.1 gms. Diphylla ecaudata Spix, 1823 _Specimens._--_Boaco_: Los Cocos, 14 km S Boaco, 220 m, 5. _Madriz_: 5 km N, 9 km E Condega, 800 m, 1. _Matagalpa_: 2 km N, 6 km E Esquipulas, 960 m, 1. Our specimens constitute the first report of this species from Nicaragua. We follow Burt and Stirton (1961:37) in regarding _D. ecaudata_ as monotypic.