86 
BULLETIN 51, UNITED STATES NATIONAL MUSEUM. 
Muzzle and anterior root of zygoma so expanded that tooth 
rows are hidden from above. 
Interpterygoid fossa broad in front, the palate with 
evident median projection Cormura, p. 90. 
Interpterygoid fossa strongly narrowed anteriorly, 
the palate without median projection. 
Upper surface of rostrum flat, with a slight me- 
dian longitudinal groove- Saccoptcryx, p. 89. 
Upper surface of rostrum distinctly swollen, con- 
vex, without noticeable median groove. 
Rostrum so much swollen anteriorly that its* 
dorsal profile is nearly parallel with tooth 
row Peropteryx, p. 90. 
• Rostrum so little swollen anteriorly that its 
dorsal profile forms a conspicuous angle with 
tooth row Peronymus, p. 90. 
Genus EMBALLONURA Temminek. 
1838. Emballonura Temminck, Van der Hoeven’s Tijdschr. Nat. Gesch. en 
Physiol., V, p. 22. 
1878. Emballonura Dobson, Catal. Chiropt. Brit. Mus., p. 359. 
Type-species. — Emballonura monticola Temminck. The genus con- 
tained four species, monticola , saxatilis y caninus , and ealcaratus 
{ —maximiliani') , among which no type was designated. As all but 
the first have received other generic names, monticola , by elimination, 
becomes the type. 
Geographic distribution. — From the Malay Peninsula and Sumatra 
east to Samoa. One species occurs in Madagascar. 
Number of forms. — Seven forms of Emballonura are currently 
recognized. 
Characters. — Dental formula : 
-2 3 . 1 . - 2 - 4567 . 2-2 
12 3 . 1 . - 2 - 4567 * 3 - 3 ’ C 
1-1 
1 - 1 ’ 
. , 2-2 
pm — 
3-3 
3-3 
= 34 . 
Upper incisors simple, small but well developed and permanent, 
subequal, the inner tooth of each pair slightly the larger. Lower 
incisors small, subequal, trifid, apparently often deciduous in old 
age. The first and second are in contact with each other, the 
third is slighty smaller than the others and separated from the 
second by a minute space and from the canine by an area equal to 
the length of an incisor. Canines small, with well-developed cingu- 
lum, but no posterior prolongation. Both above and below the cin- 
gulum develops a distinct anterior and posterior cusp. Small upper 
premolar ( pm 2 ) a minute spicule in which no definite structure is 
visible. Lower premolars ( pm 2 and pm 3 ) almost exactly resem- 
bling canine, but shorter and less slender. Upper molars broad, the 
first and second with distinct hypocones, the third with the meta- 
cone nearly as large as in the first and second, but with no trace of 
