214 Fretp Museum or Natura History — Zoétoey, Vor. X. 
Eumops bonariensis Peters. 
Twenty-nine specimens, Trinidad. 
These agree very closely with the original description of this species 
as well as with specimens from east-central Brazil. No comparison 
with specimens from Argentine or Paraguay has been possible. 
Saccopteryx bilineata Temminck. Srtripep Bar. 
Seven specimens, Porto Velho, Brazil. 
Myotis nigricans Maximilian. BLACKIsH BAT. 
One hundred and twelve specimens. Junction of San Antonio and 
Espirito Santo rivers (25), Todos Santos (77), Trinidad (10). 
The name nigricans is here used in the inclusive “blanket” sense. 
Should an east Bolivian form of this group prove recognizable the name 
hypothrix* will be available and these specimens may perhaps be re- 
garded as typical. 
Leontocebus weddelli Deville. WrEDDELL’s MARMOSET. 
One specimen, Porto Velho, Brazil. 
So far as can be judged from descriptions alone, this specimen is 
typical of this species. The white frontal marking is well developed. 
The hind feet are not wholly black but have considerable mixture of 
chestnut. 
Callicebus donacophilus D’Orbigny. Titt MonkKEy. 
Two specimens, Todos Santos. 
These are almost wholly russet brown on the upper parts, the hairs 
being faintly annulated with darker and without any distinct grayish 
areas. The hands and feet and tail are abruptly grayish in sharp 
contrast. The median under parts and the inner sides of the legs are 
bright clear tawny. 
Callicebus caligatus Wagner. Titt MoNnKEy. 
One specimen, Porto Velho, Brazil. 
Without material for comparison, it is difficult to make positive 
identification of this specimen. It seems probe ha it may be 
intermediate between C. caligatus and C. brunneus and may be referred 
tentatively to the former. The tail is mostly dark brown superficially, 
but the hairs are light at the base and finely specked or annulated with 
*D’Orbigny & Gervais, Voy. Amér. Mérid., IV, Mamm., p. 16, 1847. 
