FAMILY NOCTILIONID^E. NOCTULES. 191 



172. The Bats of the fourth family, NOCTILIONIDJE, are 

 almost exclusively confined to tropical countries, where a large 



Fio.93. NOCTJLJO. 



number of species exist, some in the Eastern, and others in 

 the Western hemisphere. Little is known, however, of their 



FiG. 94. DYSOPUS CHEIROPUS. 



habits. The Noctilios, or Noctuks^ of South America, are, com- 



