THE FAMILIES AND GENERA OF BATS. 
77 
SiiLfAiriily IT^V'RT’YIOIISrN' CTBRIN JEh. 
Geographic distribution . — Known only from Mindoro, Philippine 
Islands. 
Characters. — Premaxi] laries broadly and solidly fused anteriorly 
(length of median suture considerably less than distance between 
canines), all their boundaries completely lost in adults; bony palate 
narrowing rapidly behind tooth rows ; canines crossing each other at 
nearly right angles when jaws are closed, the lower canines almost 
in contact with each other, and lower, incisors probably absent ; cheek 
teeth very unusually cuspidate, each molar with five or six distinct 
sharply pointed cusps. 
Principal subdivisions . — This subfamily is represented by the genus 
llarpyionycteris only. 
Genus H ARPYION YCTERIS Thomas. 
1896. Harpyionycteris Thomas, Ann. and Mag. Nat. Hist., 6tli ser., XVIII, 
p. 243, September, 1896. 
1898. Harpyionycteris Thomas, Trans. Zool. Soc., London, XIV, p. 384, pi. 
xxx (animal) ; pi. xxxv (skull and teeth). 
1899. Harpy ionycteris Matschie, Flederm* des Berliner Mus. fur Naturk., 
p. 70. 
Type-species. — Harpy ionycteris whiteheadi Thomas. 
Geographic distribution . — Island of Mindoro, Philippine Islands. 
Number of forms . — Only one species is known. 
Characters . — Dental formula : 
- 2 - 1. - 2 3 4 5 6 - .1 - 1 f 1-1A 1-1 3-3 2-2 
- - (3) 1. - 2 3 4 5 6 7 * 0 - 0 V° r l - l'/'l - V / "" 3 3’. m 3-3 
28 or 30. 
Upper incisor very large, completely filling space between canines, 
their form much as in Eurnops (p. 257) , that is, each with an obliquely 
projecting hooked cusp and a broad posterior heel, the two cusps 
in contact at middle, then diverging outward. Lower incisor a 
minute spicule, probably not normally present.® Canines slanting 
noticeably forward, very broad, with well developed cingulum and 
large posterior secondary cusp, this in the upper canine almost 
equal in diameter to main cusp, though much shorter. In the 
lower canine the cingulum forms a second supplemental cusp in 
front of the main shaft of the tooth. Small upper premolar well 
developed, though not # unusually large, with distinct anterior cusp 
and narrow posterior heel. The corresponding tooth in the lower 
jaw ( pm o) is much larger, its size when viewed from the side 
nearly equaling that of the first molar. In form it somewhat 
resembles the canine though the cingulum and secondary cusp are 
® In tlie type it occurs in the right mandible only. 
