Compiled and Edited by:
Nancy B. Simmons and Andrea L. Cirranello
American Museum of Natural History

Your search for Promops resulted in 3 species-level matches:

Promops Gervais, 1856. In Comte de Castelnau, Exped. Partes Cen. Am. Sud., Zool. (Sec. 7), Vol. 1, pt. 2 (Mammifères) p. 58.

Promops ursinus Gervais, 1856 (=Molossus nasutus Spix, 1823)

Promops centralis Thomas, 1915.
Ann. Mag. Nat. Hist. ser. 8, 16: 62.
Big Crested Mastiff Bat

Promops davisoni Thomas, 1921.
Ann. Mag. Nat. Hist. ser. 9, 8: 139.
Davison's Crested Mastiff Bat

Promops nasutus (Spix, 1823).
Sim. Vespert. Brasil. p. 60.
Brown Mastiff Bat