260 Bulletin American Museum of Natural History. [Vol. XXII, 



42. Sorex oreopolus Merriam. 



One specimen, in faded, worn pelage, Volcan de Fuego, altitude 

 13,000 feet, Sept. 12. 



43. Myotis velifer (/. A. Allen). 



Nineteen specimens: Las Canoas, 17 specimens (10 salted), Sept. 

 1-4; Artenkiki (near Las Canoas), 2 specimens, Sept. 5. 



Collector's measurements of 9 specimens: Alar expanse, 295 

 (289-305); length, 56 (51-63). 



44. Myotis thysanodes Miller. 

 Seven specimens, Los Masos. 



45. Myotis calif ornicus mexicanus (Saussure). 

 Three specimens, Los Masos. 



46. Myotis nigricans (Wied). 

 Eight specimens, Los Masos. 



47. Vespertilio fuscus Beauvois. 

 Five specimens, Los Masos. Forearm, 47-49 mm. 



48. Lasiurus borealis mexicanus (Saussure). 

 Five specimens, Los Masos. Forearm, 38-40 mm. 



49. Lasiurus cinereus (Beauvois). 

 One specimen, Los Masos. 



50. Molossus nigricans Miller. 

 One specimen, Los Masos. 



51. Molossus obscurus Geoffroy. 

 Two specimens, Los Masos. Forearm, 39 mm. 



52. Nyctinomus mexicanus Saussure. 



Thirty specimens: 16 skins and skulls, and 14 salted specimens, 

 Las Canoas, Sept. 1-5. 



53. Spectrellum mexicanum (Miller). 



Twelve specimens, Rancho Palo Amarillo, near Amatlan, Tepic, 

 Jan. 15, 1 6. 



