184 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 69 



behind one of the principal ruins along the beach path a short dis- 

 tance west of the old church tower we found ourselves in the midst 

 of a large colony of Hemiderma perspicillatum astecum and a 

 smaller colony of Glossophaga soricina leachii, many individuals of 

 the mingled species fluttering close about our heads. Among a few 

 specimens of the common species knocked down we discovered a 

 Macrophyllum and immediately began searching the flying swarm 



Fig. 7. — Macrophyllum macrophyllum. 

 No. 179724, U. S. Nat. Mils. About nat. size. 



about us for others. We soon learned to distinguish the rare species 

 from the common ones by the long hind limbs and corresponding 

 posterior extension of the interfemoral membrane. Six specimens, 

 altogether, were secured, three of which are in the U. S. National 

 Museum and the others, collected by Mr. Osgood, are in the Field 

 Museum of Natural History. No material from the type region of 

 the species is available for comparison, but the specimens agree 

 closely with the published descriptions and are assumed to represent 

 the monotypic genus. 



Specimens examined : Old Panama, 6. 



Genus PHYLLOSTOMUS Lacepede 



The distinguishing features of the members of this genus are the 

 large robust form, well-developed nose leaf, rather small, narrow, 

 pointed ears, short tail and large interfemoral membrane combined 

 with short, massive skull and the possession of two lower incisors 

 and two lower premolars on each side. There are no facial stripes. 

 The skull in general angularity, especially the prominent sagittal 

 crest and outstanding paroccipital processes suggests that of Vampy- 

 rus, but the much shorter rostrum exceeds the interorbital area in 

 width, the teeth differ notably in structure and the lower premolars 

 in number. The teeth are 32 in number. 



