MOLOSSUS. 619 
Dysopes Illig., Prodr. Syst. Mamm. et Av., 1811, p. 122. 
Ears close together, or united at base of their inner margins; 
muzzle broad, obtuse or obliquely truncate; indistinct vertical wrin- 
kles on lips, sometimes smooth; tragus short; first and fifth toes 
thickest, backs of all with long curved hairs. Upper incisors with 
their cusps close together in front. 
REY LO) DHE SPECIES: 
A. Forearm over 50 mm. PAGE 
PP DOME PEGCIEN DIOWH. . nn. iva sete asc. AM, repas 619 
TISPAOWE SER MEOW ck cl oa crt cee ele eye M. nigricans 620 
B. Forearm over 36 mm., under 50 mm..........M. obscurus 620 
C. Forearm not over 36 mm..............M. tropidorhynchus 620 
Fic. XCIX. MOLOSSUS RUFUS. 
No, 102789 U.S. Nat. Mus. Coll. Nearly life size. 
577. rufus (Molossus), Geoff., Ann. Mus. Hist. Nat. Paris, v1, 1805, 
Pp. 155. 
ursinus, Spix, Simia. et Vespert. Bras., 1823, p. 58, pl. xxv, fig. 4. 
alecto, Temm., Mon. Mamm., 1, 1827, p. 231. 
holosericeus, Natt., Weigm., Archiv. f. Naturg., 1843, p. 368. 
albus, Natt., Weigm., Archiv. f. Naturg., 1843, p. 368. 
Rurous MastirF Bar. 
Type locality. Paraguay. 
Geogr. Distr. Southern Mexico, through Central America to 
Paraguay and Bolivia, West Indies. 
Genl. Char. Glandular sac directed forward, opposite the an- 
terior extremity of the sternum in the male; ears shorter than head; 
antitragus circular; tragus small, acute; muzzle extending beyond the 
jaw; short erect hairs between nostrils; lips smooth; wing membrane 
from ankles. 
Color. General hue of body above and beneath reddish brown. 
Measurements. Total length, 128.2; tail vertebrae, 50.8; thumb, 
10; forearm, 51; third finger, metacarpal, 50.8; fourth finger, meta- 
carpal, 49.5; fifth finger, metacarpal, 26; tibia, 17.7; foot, 12.7; ear, 
