NO. 5 MAMMALS OF PANAMA GOLDMAN 183 



TONATIA AMBLYOTIS (Wagner) 



Round-eared Bat 



Phyllostoma amblyotis Wagner, Wiegmann's Archiv. f . Naturg., p. 365, 1843. 

 T}'pe from Matto Grosso, Brazil. 



Characters distinguishing the round-eared bat from the other 

 species of the region are given under the genus. The forearm 

 measures about 53 millimeters. 



The only record I have of its occurrence in Panama, or any part 

 of Middle America, is that of Thomas (1902a, p. 54) based on 

 specimens collected at Bugaba, Chiriqui, by H. J. Watson. The 

 species is said to be rare. 



Genus MACROPHYLLUM Gray 



The unusual elongation of the hind limbs and corresponding 

 posterior extension of the interfemoral membrane inclosing the long 

 tail to border, together with the large nose leaf and slender general 

 form externally distinguish this monotypic genus. The skull is 

 short with high, anteriorly arched braincase and very short, broad 

 rostrum. The nasal opening is directed forward from a point far 

 back leaving a shelf-like projection of the jaw between the opening 

 and the base of the incisors. The dentition is similar to that of 

 Micronycteris, but the anterior upper premolar is very small and the 

 middle lower premolar notably minute, crowded inward out of line 

 and nearly hidden by the other premolars. The reduced condition 

 of these teeth is probably associated with the general shortness of the 

 skull. The upper incisors completely fill the space between the 

 canines, the middle pair being much larger than the outer, with some- 

 what oblique cutting edges. The teeth are 34 in number. 



MACROPHYLLUM MACROPHYLLUM (Wied) 



Long-legged Bat 



Phyllostoma macrophyllum Wied, Beitr. zur Naturg. Brasilien, Vol. 2, 1826, 

 p. 188. T}'pe from Mucuri River, Minas Gerses, Brazil. 



Features distinctive of this rare bat have been given under the 

 genus. The forearm measures about 38 mm. The only record of 

 the occurrence of the species in Panama or any part of Middle 

 America is that recently published by E. W. Nelson (191 2, p. 93), 

 based on specimens taken by me in the ruins of old Panama about 

 five miles east of the modern city. Accompanied by W. H. Osgood 

 I visited the ruins February 7, 191 2. On entering a vaulted cellar 



