232 BULLETIN 57, UNITED STATES NATIONAL MUSEUM. 
SvxL family' KERIYOULIN^. 
1878. Vespertiliones Dobson, Catal. Chiropt. Brit. Mus., p. 168 (part). 
1891. V espertilionidce (part; Vespertilionine division, part) Flower and 
Lydekker, Mammals, living and extinct, p. 661. 
Geographic distribution. — Africa, south of the Sahara ; India and 
the Malay Region ; New Guinea. 
Characters. — Externally as in the Vespertilioninse, Sternum very 
short, its length in median line not twice as great as breadth of 
presternum ; median lobe of presternum small but distinct, upright ; 
keel of mesosternum low. Only four or five ribs articulate with 
sternum. Coracoid curved outward as in the Vespertilioninae. 
Remarks. — The peculiar, shortened sternum distinguishes this group 
very readily from the other subfamilies of Vespertilionidae. 
Principal subdivisions. — The subfamily Kerivoulinae is represented 
by two genera. 
KEY TO THE GENERA OF KERIVOULINiE. 
Upper canine normal ; middle lower incisor with three cusps. 
Kerivoula , p. 232. 
Upper canine with shaft elongated and laterally compressed; middle 
lower incisor with four cusps Phoniscus, p. 233. 
Genus KERIVOULA Gray. 
1842. Kerivoula Gray, Ann. and Mag. Nat. Hist., X, p. 258, December, 1842. 
1849. Kirivoula Gervais, Diet. Univ. d'Hist. Nat., XIII, p. 213. 
1860. Nyctophilax Fitzinger, Sitzungber. Math. -Nat. Cl. k. Akad. Wis- 
sensch. Wien, XLII, p. 390. 
1878. Kerivoula Dobson, Catal. Chiropt. Brit. Mus., p. 330. 
1891. Cerivoula Blanford, Fauna Brit. India. Mamm., p. 338. 
Type-species. — V espertilio hardioickii Horsfield. 
Geographic distribution. — Africa, south of the Sahara; India and 
the Malay Region; New Guinea. 
Number of forms. — Eighteen species of Kerivoula are now rec- 
ognized. 
Characters.- — Dental formula : 
-2 3 . 1 . - 234567 . 2-2 1-1 3-3 3-3 00 
123 1 . - 234567 ^ 3 - 3 ’ c 1- l’V m 3 -S’ m 3 - 3 “ 38- 
Upper incisors well developed, the outer about half the height, though 
of nearly the same diameter as inner, between which and canine it 
is closely crowded; main axis of each tooth nearly perpendicular; 
lower incisors trifid, slightly imbricated. Canines normal in form 
and rather small, the point of the upper tooth extending slightly 
beyond cingulum of lower when jaws are closed; lower canine with 
small antero-internal cingulum cusp. Premolars well developed, but 
not peculiar in form, those of mandible subequal, their crowns sub- 
quadrate in cross section and without distinct cutting edges. Molars 
normal ; m 1 and m 2 without liypocone, m 3 with metacone and three 
