THE FAMILIES AND GENERA OF BATS. 
173 
Upper incisors small, in a slightly convex, continuous row, the outer 
separated from canine by space equal to length of cutting edge of i 1 . 
Inner incisor fully double the bulk of outer, though the two when 
viewed from in front do not differ materially in form, their crowns 
being low, longer than high, with nearly horizontal cutting edge. 
Outer incisor wider relatively to its length than inner. Mandibular 
incisors very small, with low, flat, rounded crowns, the outer not as 
small as inner. They extend between canines in a slightly convex row 
broken by minute spaces, of which the median is the most distinct. 
Canines simple, without secondary cusps, the upper somewhat less 
than half as long as high, with well-developed cutting edges but with 
concave area on inner surface shallow. Lower canine slender, the 
shaft nearly terete, the posterior basal edge produced into a distinct 
heel. First upper premolar small, 
scarcely equal to inner incisor, its crown 
very low, longer than broad, with indis- 
tinct cutting edge rising to a slight an- 
gle anteriorly. Upper molars longer 
than broad; protocone low and broad, 
forming the entire shelf-like, broadly 
rounded inner edge of tooth; paracone 
and metacone low and long, about equal 
in m 1 and m 2 , the metacone much 
smaller in m 3 ; between jmracone and 
metacone a distinct though very small 
elevation, probably the remnant of the 
mesostyle ; inner half of crown flat, 
outer half rising at a distinct angle ; m 2 
slightly smaller than m 1 ; m 3 more than 
half as large as m 2 slightly smaller 
than m 1 ; m 3 more than half as large 
as m 2 . Lower molars long and narrow, the second somewhat more 
Fig. 24. — Phyllonyctekis poeyi. 
Adult female. Guanajay, Cuba. 
No. 103585. xl£. 
than half as long as first, the third about half as large as second. 
Crown of m 2 and m 3 flat, the central portion distinctly concave, 
the margin without cusps ; m 1 with a similar concavity occupying pos- 
terior two-thirds of crown, the anterior third rising into a low cusp. 
This tooth is almost exactly similar to the posterior premolar except 
that it is nearly twice as long. Skull (fig. 24) essentially as in the 
less modified Glossophaginae, but rostrum deeper ; zygomatic arches 
incomplete. Base of brain case flat, showing no special peculiarities, 
the region between pterygoids with low median ridge. Basisphenoid 
pits barely indicated. Audital bullae rather large, covering more than 
half surface of cochleae. Ears moderately large, separate. Noseleaf 
rudimentary, the erect portion represented by a mere bluntly angular 
projection. Tongue long and extensible, armed with incurved papil- 
