_Specimens._--_Chinandega_: Potosi, 5 m, 21; 4.5 km N Cosigueina, 15
m, 2; El Paraiso, 1 km N Cosigueina, 20 m, 17; Hda. Bellavista, 720
m, Volcan Casita, 4; Hda. San Isidro, 10 km S Chinandega, 20 m, 2;
San Antonio, 35 m, 2. _Nueva Segovia_: Corozo, 15 km NNE Jalapa,
660 m, 1; 3.5 km S, 2 km W Jalapa, 660 m, 4.
Only one specimen of this large molossid (from Volcan de Chinandega--J.
A. Allen, 1908:670) has been reported from Nicaragua. All of our
specimens are from the northern or northwestern part of the country.
Many were shot in early evening as they followed a straight, direct
flight pattern (presumably from day-roosts toward foraging or watering
areas); the series from Potosi was netted over a small stream as
described in the account of _Noctilio leporinus_. We confidently refer
our material to the species currently known as _ater_, although
assignment to the subspecies nigricans is tentative.
Of 21 females autopsied in the first week of March on the Cosigueina
Peninsula, seven were pregnant, each with a single embryo (7-22 mm in
crown-rump length, average 16.7). Ten males taken at the same time had
an average testicular length of 5.7 (2-7) mm, whereas the testes of a
male obtained on 9 March at San Antonio measured 8 mm. None of five
females obtained in late July in Nueva Segovia evidenced reproductive
activity, nor did two of three females taken in July and one taken in
August from Chinandega; the fourth Chinandegan female, taken on 17
July, carried an embryo that was 36 mm in length. Two males from
southern Chinandega (mid-July) had testes 7 and 4 mm long.
Representative measurements of 10 specimens of each sex from Nicaragua
are given in Table 4.