1/8 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 69 



stripe down the posterior part of the back ; the underparts are 

 whitish. It is a robust animal with large feet, and narrow ears 

 tapering to slender points. The fur is short. The forearm measures 

 about 60 millimeters. 



The form was known only from Venezuela until recorded from 

 Empire, Panama, by E. W. Nelson (1912, p. 93). The record was 

 based on an individual shot flying across an old pineapple field near 

 Culebra Cut just at dusk, February 2, 191 2. Several others appeared 

 at the same time and all had doubtless just come from some hiding 



Fig. 3.— Dirias albiventer minor. 

 No. 179848, U. S. Nat. Mus. About nat. size. 



place in the vicinity. They flew with rapid wing strokes, passing at a 

 height of about 30 feet from the ground and so near that the erect 

 ears were noted. Another example secured flew into my quarters at 

 Empire during the evening of February 16, 1912. The two indi- 

 viduals secured have been compared with the type and another 

 example from Venezuela and found to agree essentially with them. 

 A dry skin is darker than the Venezuela specimens, but in all prob- 

 ability merely represents a darker color phase. 

 Specimens examined : Empire, 2. 



Family PHYLLOSTOMIDAE. Leaf-nosed Bats 



By far the greater number of American bats are comprised in this 

 rather heterogeneous family under which a number of subfamilies 

 are recognized. The family includes the largest of American bats, 

 but the range in size is extraordinary, some of the species being very 

 small-. The members are usually distinguishable by the presence of 

 " nose leaves " or naked cutaneous folds which rise prominently over 

 the nostrils, but in the Chilonycterince these are absent. The ears, 

 moderately developed in most genera, are variable in form, but 

 usually rather narrow and tending to be pointed ; in certain members 

 of the family, as Vampyrus and Lonchorina, however, they are 

 greatly elongated. The tail is also variable in length, but except in 

 such examples as Macrophyllum, Lonchorina, and Chilonyctcris does 



