160 PEROPTERYX. CENTRONYCTERIS. DIRIAS. 



Genus Peropteryx. 



Peropteryx canina phaea G. M. Allen. 



Peropteryx canina phcea G. M. Allen, Bull. Mus. Comp. Zool., LIV, 



1911, p. 222. 

 Type locality. Point Saline, Grenada, Lesser Antilles. 



Genus. Centronycteris. 



Centronycteris centralis Thomas. 



Centronycteris centralis Thos., Ann. and Mag. Nat. Hist., Ser, 8, X, 



1912, p. 638. 

 Type locality. Bogava, Chiriqui, Panama. 



Family Noctilionidae. 

 Genus Dirias. 



Dirias Miller, Proc. Biol. Soc. Wash., XIX, 1904, p. 84. Type 

 Noctilio albiv enter Spix. 



Dirias minor Osgood. 



Dirias minor Osgood, Field Mus. Nat. Hist. Pub., 149, X, 1910, 

 p. 30; Nelson, Proc. Biol. Soc. Wash., XXV, 1912, p. 93. 



Type locality. Encontrados, Zulia, Venezuela. Ranges to Pan- 

 ama, having been taken at Empire, Canal Zone, Feb. 16, 1912. 



Genl. Char. Allied to D. albiventer but smaller. 



Color. Alcoholic. Upperparts pale Prout's-brown; a whitish 

 median line from interscapular region to tail; underparts tawny olive; 

 membrane pale Prout's brown. Ex type in Field Museum of Natural 

 History. 



Measurements. Total length, 79; tail, 12; ear, 20.5; forearm, 

 58.4; thumb, 10; tibia, 21.5; calcar, 30.5; foot and claws, 15.6. 

 Skull: Total length, 18.5; zygomatic width, 14.6; intertemporal 

 width, 5.6; length of upper molar series, 6; length of mandible, 12.7; 

 length of lower molar series, 6.8. Ex type in Field Museum of Natural 

 History. 



