94 
BULLETIN 57. UNITED STATES NATIONAL MUSEUM. 
rostral portion snort ana flat, less than half the length of brain case, 
conspicuously narrowed in front of lachrymal region. Interorbital 
region strongly concave. Premaxilla ries large, broadly rounded off 
posteriorly, extending to upper surface of rostrum. Postorbital 
process well developed, curved, terete, or slightly flattened. Ptery- 
goids gradually diverging posteriorly, the hamulars nearly straight. 
Basisphenoid pits large and deep, separated by a conspicuous me- 
dian plate. Audital bullse large, conspicuously emarginate on inner 
side. Mandible with notice- 
able concavity in lower outline 
beneath premolars. Externally 
characterized by the short, 
very conical muzzle, deep hol- 
low between eyes, long lower 
lip terminating anteriorly in 
two naked areas separated by 
a groove, slender foot, and sim- 
ple tail, the latter perforating 
inter femoral membrane. 
Species examined. — T aplioz- 
ous perforatus Geoffroy, T. 
mauritianus Geoffroy, T. me- 
lanopogon Tennninck, T . nudi- 
ventris Cretzschmar, T. sacco- 
laimus Temminck. 
Remarks . — Though showing 
no special peculiarities of ex- 
ternal form this genus is prob- 
ably the most aberrant of the 
Emballonurinse. Pligh special- 
ization is shown in the form of 
the rostrum and anterior por- 
tion of the mandible, the 
deeply grooved tibia, and the 
high spinous process of the epitrochlea, all of which indicate affinities 
with the Diclidurinse. 
S-CLUlairiily DICLIDURINSE. 
1866. Diclidurina Gray, Ann. and Mag. Nat. Hist., 3d ser., XVII, p. 92, Feb- 
ruary, 1866. 
1878. Dicliduri Dobson, Catal. Chiropt. Brit. Mus., p. 355. 
1886. Dicliduri Gill, Standard Nat. Hist., V, p. 169. 
Geographic distribution . — Tropical America. 
Characters . — Skull (fig. 18 ) with postorbital processes short and 
straight, scarcely more than the projecting median angle of the very 
