THE FAMILIES AND GENERA OF BATS. 
85 
moved the Molossine genera to form a subdivision of the Vesper- 
tilionidse. 
Principal subdivisions. — The genera of Emballonuridse as a whole 
form a very homogeneous group, but the South American Diclidu- 
rus is so different from the others that it must be regarded as forming 
a distinct subfamily. 
KEY TO THE SUBFAMILIES OF EMBALLONURIDSE. 
Postorbital process slender, distinct ; clavicle not expanded. 
Emballonurince, p. 85. 
Postorbital process broad, almost obliterated by the very wide supraorbital 
ridge ; clavicle greatly expanded Diclidurince, p. 94. 
ShTd family TCTYHBAJL. I ,< )JS I7 K’I N/F. 
1866. Emballonurina, Gray, Ann. and Mag. Nat. Hist., 3d ser., XVII, p. 92. 
February, 1866. 
1878. Emballonurce Dobson, Catal. Chiropt. Brit. Mus., p. 353. 
1886. Emballonurce Gill, Standard Nat. Hist., V, p. 169. 
Geographic distribution. — Same as that of the family Embal- 
lonuridse (p. 83). 
Characters. — Postorbital processes long and curved, in no way 
obscured by supraorbital ridges, their length at least four times 
their width; clavicle normal, its greatest width about one-sixth its 
length; tibia either subterete or with outer side flattened. 
Principal subdivisions. — At least eleven well-defined genera may be 
recognized among the members of the subfamily Emballonurinse. 
KEY TO THE GENERA OF EMBALLONURINA. 
Upper incisors 2-2; wings without pouches Emballonura , p. 86. 
Upper incisors 1 - 1 ; wings with or without pouches. 
Wings without pouches : 
Heavily built species with forearm usually more than 50 mm.; 
frontal region of skull conspicuously concave Taphozous, p. 93. 
Lightly built species with forearm less than 50 mm. ; frontal region 
of skull not conspicuously concave. 
Anterior upper premolar ( pm 2 ) styliform ; muzzle not notice- 
ably produced Coleura, p. 87. 
Anterior upper premolar (pm 2 ) lancet shaped; muzzle notice- 
ably produced Rhynchiscus, p. 88. 
Wings with pouches : 
Molars without hypocones ; upper incisors absent in adult. 
Myropteryx, p. 91. 
Molars with hypocones ; upper incisors present in adult. 
Premaxillaries rudimentary above, much exceeded by greatly 
inflated anterior portion of rostrum Balantiopteryx, p. 92. 
Premaxilaries well developed above, their extremities lying 
distinctly on upper surface of rostrum. 
Muzzle and anterior root of zygoma so little expanded 
that tooth rows are visible from above. 
Centronycteris, p. 91. 
