mm) from Potosi were caught on 6 March in a mist net set
over a large pool in a shallow estuarine stream; the mouth of the
stream opened into the Gulf of Fonseca approximately 200 yards below
our netting site. Other individuals of this species were observed as
they foraged over large pools formed at high tide near the mouth of the
stream. Our other specimens were caught in mist nets set over fresh
water streams near Lake Nicaragua or along the shores of the lake. A
female from near Alta Gracia, caught on 27 March, carried a single
embryo that measured 41 mm, whereas one from Finca Amayo was lactating
on 25 June. Four males taken on Isla de Ometepe in late March and early
April had a mean testicular length of 9.5 (8-10) mm.

Pteronotus davyi fulvus (Thomas, 1892)

_Specimens._--_Chontales_: Cuapa, 4. _Matagalpa_: 3 mi E San Ramon,
126.

This small naked-backed bat has not been reported previously from
Nicaragua. Autopsy of seven females collected on 9 May near San Ramon
revealed that four were pregnant, each with a single embryo--average
crown-rump length 25.0 (21-29) mm.

The distribution of _P. davyi_ is poorly known in much of Central
America. The species was reported only recently from Costa Rica
(Starrett and Casebeer, 1968:8) and is unknown from Panama. We assign
our specimens tentatively to the subspecies _fulvus_ on geographic
grounds.

Pteronotus parnellii fuscus (J. A. Allen, 1911)

_Specimens._--_Boaco_: Santa Rosa, 17 km N, 15 km E Boaco, 300 m,
1; Los Cocos, 14 km S Boaco, 220 m, 1. _Chinandega_: 6.5 km N, 1 km
E Cosigueina, 10 m, 1. _Zelaya_: Bonanza, 850 ft, 1; 2 mi SW
Bonanza, 600 ft, 1; S side Rio Mico, El Recreo, 25 m, 1; Cara de
Mono, 50 m, 4.

Although this species is widespread in Middle America, it has been
known previously from Nicaragua only by a specimen from "Chontales"
(Miller, 1902:402). All of our specimens were captured in mist nets.
Two adult females (one taken on 28 February and the other on 8 March)
each carried a single embryo (13 and 18 mm in crown-rump length,
respectively); a female taken in April was lactating and had a flaccid
uterus suggesting relatively recent parturition. Adult females captured
in the months of June, July, and August evidenced no sign of
reproductive activity. Two of these were in dark, fresh pelage, but one
captured on 24 June and another on 28 July were molting. In both
individuals, active molt evidently had slowed or su