194 BULLETIN 144, UNITED STATES NATIONAL MUSEUM 



Colm\ — Upper surface nearly " Mars-brown " (Ridgway, 1912) 

 or occasionally not so dark, gradually darkening to blackish slate 

 at the bases of the hairs. The tips of the longer hairs have a con- 

 spicuous buffy gloss imparting a finely speckled appearance to the 

 entire back. Below, the colors are much the same as on the dorsal 

 surface, but the buffy tips are paler and more abundant, producing a 

 definite wash of dull whitish without gloss. 



Measureriients. — The dimensions of the type as given by Peters, 

 are: Total length, 93 mm.; tail, 46; foot, 6; ear, IT; tragus, 8; 

 forearm, 40; third digit, 63; fourth digit, 55; fifth digit, 52; tibia, 

 16.5; calcar, 14. For measurements of the material examined, see 

 tables, pages 195 and 196. 



Specimens exainined. — Total number 35, from the following 

 localities : 



BOLIVIA: Cliulumani, 2000 meters, 2 skins, 1 ale. (B. M.). 



ECUADOR: Loja, 200 meters, 1 skin (B. M.) ; Pallatanga, 1 skin 



(A. M. N. H.) ; Santa Rosa, Loja, 4 ale. (B. M.) ; Sigsig, 8500 feet, 



5 skins (B. M.) ; no exact locality, 1 skin, 1 ale. (B. M.). 

 PERU: Chachapoyas, 7600 feet, 1 skin (B. M.) ; Hacienda Limon, 3 miles 



west of Balsas, 1 ale. (F. M.) ; Inambiri River, Carabaya, 1 skin 



(M. C. Z.) ; Inea Mines, 1 skin (A. M. N. H.) ; Iquente, 1 ale. (U.S.N.M.) ; 



Junin, Rumieruz, 2 skins (A. M. N. H.) ; Rio Negro, 1 skin (A. M. N. H.) ; 



Santa Ana, 3500 feet, 3 skins, 7 ale. (U.S.N.M.) ; Sureo, near Lima, 



1 ale. (B. M.). 



MYOTIS CHILOENSIS ALTER, new subspecies 



Type locality. — Palmeiras, Parana, Brazil. 



Type specimen. — Adult female (in alcohol), No. 0.6.29.23, British 

 Museum (Natural History). Collected at Palmeiras, Parana, Bra- 

 zil, by G. Grillo. Keceived from Genoa Museum. 



Distribution. — Eastern Argentina and southern Brazil. 



Diagnosis. — Like Myotis cMloen^is oxyotus but general size greater, 

 and skull, in particular, larger, its total length ranging from 15 

 to 16.2 mm. instead of from 14.2 to 15 mm. 



Measurements. — For measurements see tables, pages 195 and 197. 



Specimens exommied,. — Total number 21, from the following locali- 

 ties: 



ARGENTINA: Buenos Aires Province, General Lavalle, 4 skins (M. C. Z.), 



3 skins, 6 ale. (B. M.), 2 ale. (U.S.N.M.) ; Cliubut, 1 ale. (B. M.). 

 BRAZIL: Palmeiras, Parana, 5 ale. (B. M.). 



Remarks. — Apart from its larger size Myotis chiloensis alter dif- 

 fers in no appreciable character from the Andean M. c. oxyotus. 



