], 5 [Female])
Minimum 33.0 18.8 9.1 7.7 7.3
Maximum 38.1 20.3 9.8 8.2 7.7

Isla del Maiz Grande, Nicaragua

Average 6 35.6 19.4 9.2 7.8 7.4
(3 [Male], 3 [Female])
Minimum 34.5 19.1 9.0 7.7 7.3
Maximum 37.0 19.8 9.3 7.9 7.5

_Micronycteris megalotis microtis_, Greytown, Nicaragua (holotype)

USNM 16366/23364, [Male] 31.5 18.2 8.8 7.6 6.9

Rio Coco, Nicaragua (AMNH)

Average 6 33.6 18.9[3] -- 7.5[3] 7.1[3]
(3 [Male], 3 [Female])
Minimum 32.7 18.8 -- 7.4 7.0
Maximum 34.2 19.0 -- 7.6 7.2

Bonanza, Nicaragua

KU 96251, [Male] 32.3 18.4 8.8 7.6 7.0
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[a] Specimens labeled with reference to Dario, Diriamba, and
Managua.

Four of the five specimens taken northwest of Diriamba were shot from
a daytime retreat in a culvert; the fifth was caught by hand as it
attempted to fly out of a hollow, fallen tree. Two adult females
captured on 31 March were pregnant, each carrying a single embryo (13
and 14 mm in crown-rump length), whereas two obtained on 14 August
showed no sign of reproductive activity. An adult male, also taken
on 14 August, had testes 2 mm in length. Of three additional adult
females, one captured on 3 June was pregnant (embryo 21 mm in
crown-rump length), whereas two obtained on 14 April evinced no gross
reproductive activity.

The subspecies _mexicana_ has not been reported previously from
Nicaragua, although Gardner _et al._ (1970:715) recently extended its
known distribution southward from Honduras (Goodwin, 1942c:124) and El
Salvador (Felten, 1956:180) to west-central Costa Rica. In Nicaragua,
as apparently in Costa Rica, _mexicana_ occupies the Pacific versant,
the Caribbean lowlands being inhabited by the smaller race,
_Micronycteris megalotis microtis_ Miller, 1898 (type locality,
Greytown, Nicaragua--reported also from "Rio Coco," Nicaragua, by J. A.
Allen, 1910:110). Nicaraguan examples of _M. m. mexicana_ are, on the
average, considerably larger in cranial dimensions and length of
forearm than are specimens of _M. m. microtis_ (see Table 1). The
series of _microtis_ fro