230 Bulletin American Museum of Natural History. [Vol. XX, 



Lonchophylla thomasi, sp. nov. 



Type, No. 16120, $ ad., Cuidad Bolivar, Venezuela, Jan. 26, 1900; 

 S. M. Klages. 



Much smaller and much darker colored than L. mordax Thomas, 

 from the coast near Bahia, Brazil ; nose-leaf broader and shorter; 

 skull smaller, rostral portion shorter, broader, and less tapering; brain- 

 case more convex and higher. 



Above dark russet brown, the basal two thirds of the fur pale buffy 

 whitish; under parts similar, little if any lighter than the dorsal sur- 

 face; ears and membranes blackish brown. 



Measurements. Forearm, 30 mm. ; thumb, 7.5; third finger: 

 metacarpal 32, first phal. 12, second phal. 15, third phal. 6; fifth 

 finger: metacarpal 29, first phal. 8.5, second phal, 8; tibia, 12; hind 

 foot, 9; calcar, 5; ear above crown (dry), 8. Skull, total length, 21; 

 width of braincase, 8. 



Through the kindness of Mr. Gerrit S. Miller, Jr., I have had 

 the opportunity of comparing the present specimen with a 

 topotype of Lonchophylla mordax Thomas in the collection of 

 the U.S. National Museum, from which it differs strikingly in 

 coloration, and also in respect to the size and general con- 

 formation of the skull, which is much smaller than that of 

 mordax, and very different in proportions, but with which it 

 agrees in details of dentition and the undeveloped condition 

 of the zygoma. Unfortunately it is represented by only a 

 single specimen. 



Named for Mr. Oldfield Thomas, the distinguished mam- 

 malogist of the British Museum. 



Artibeus rusbyi, sp. nov. 



Type, No. fff, $ (?) ad., Yungas, Peru (alt. 6000 ft.), Sept., 1885; 

 Dr. H. H. Rusby. Named in honor of Dr. Rusby, the dis- 

 guished botanist, who collected the type. 



Size large, one of the largest species of the genus; skull very elongate; 

 prominent face-streaks. 



Above dark seal brown from the shoulders posteriorly; head, neck, 

 and shoulders much lighter; ventral surface nearly as dark as the back; 

 fur basally lighter, dull grayish white, showing at the surface on 

 shoulders and neck; face with four distinct, conspicuous white stripes 

 a pair from the posterior base of the nose-leaf to the upper anterior 

 base of the ears, and one on each side from the angle of the mouth to 

 the lower anterior base of the ears; ears and membranes dark brown, 



