1860. _M. [= Ischnoglossa] nivalis_ Saussure, Revue et Mag.
Zool., Paris, ser. 2, 12:492, November, type from near snow
line of Mt. Orizaba, Veracruz.
1900. _Leptonycteris nivalis_, Miller, Proc. Biol. Soc.
Washington, 13:126, April 6.
_Distribution in Tamaulipas._--Probably throughout southern
part of state, but presently known only from one locality.
The specimens herein reported were taken in a cave. They provide the
first record of the species from Tamaulipas and are assigned to the
subspecies _nivalis_ on the basis of their brownish color and small
size in comparison with specimens of _L. n. longala_ from Coahuila (see
also description and measurements of _longala_ given by Stains,
1957:356). None of the specimens suggests intergradation in color
between _nivalis_ and _longala_, but some are slightly larger than
specimens of the former from Veracruz.
Twelve females taken on August 27, 1961, were pregnant. Each carried a
single embryo, the embryos averaging 15.7 (12-20) mm. in crown-rump
length. The average weight of the 12 females was 26.9 (24.5-30.0)
grams; 10 males weighed an average of 24.6 (21-28) grams.
_Measurements._--Average and extremes of ten specimens (5
males and 5 females) are as follows: 78.2 (76-80); 0.0; 16.4
(15-17); 16.7 (16-19); length of forearm, 48.4 (45.2-54.3);
length of third finger, 100.8 (99.2-103.7); greatest length
of skull, 26.8 (25.9-27.6); zygomatic breadth (6 only), 10.9
(10.7-11.1); least interorbital constriction, 4.6 (4.5-4.9);
mastoid breadth, 10.8 (10.5-11.2); length of maxillary
tooth-row, 8.7 (8.4-9.0).
_Records of occurrence._--Specimens examined, 28: all from
6.5 mi. N, 13 mi. W Jimenez, 1250 ft.
=Sturnira lilium parvidens= Goldman