THE FAMILIES AND GEN EE A OF BATS. 
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high sagittal crest and broadly expanded, shelf-like paroccipital 
processes. Zygomata heavy, a little expanded both anteriorly and 
posteriorly. Basisphenoid pits evident, though rather shallow. Floor 
of braincase forming an evident angle with roof of posterior nares. 
Audital bullse small and flat, covering about one-half surface of 
cochleae ; the height (considerably less than width. Ears moderately 
large, widely separate. Noseleaf well developed, though simple. 
Tail less than half as long as femur, projecting from base of moder- 
ately wide inter femoral membrane. 
Species examined — Phyllostomus discolor Wagner, P . hastatus 
(Pallas), P. latifolius Thomas, P. verrucosus Elliot. 
Remarks . — This genus is at once recognizable by the robust, heavy 
form of its members, most of which are of medium or large size, the 
simple, well-developed noseleaf, moderately small, separate ears, 
short tail, heavy skull, and the combination of two lower incisors 
with two lower premolars. 
Genus PHYLLODERMA Peters. 
1865. Pliylloderma Peters, Monatsber. k. preuss. Akad. Wissensch., Berlin, 
p. 513 (subgenus of Phyllostomus). 
1866. Guandira Gray, Proc. Zool. Soc. London, p. 114. 
1878. Pliylloderma Dobson, Catal. Chiropt. Brit. Mus., p. 482 (genus). 
Type-species. — Pliylloderma stenops Peters. 
Geographic distribution. — Cayenne. 
Number of forms. — One, the type species. 
Characters. — Dental formula: 
-2 3. 1. - -34567.2-2 1-1 2-2 3-3 
12 -. 1. - 234567^-2’ c i - 1 ’ pm 3 - 3 ’ m 3 - 3~ 34 ' 
Teeth much as in Phyllostomus , but differing in several details: 
Inner upper incisors bifid, the slender outer cusps longer than the 
inner ; inner lower incisor nearly twice as wide as outer when viewed 
from the front, faintly bifid, the outer tooth not distinctly so (the 
same difference in size is noticeable in crown view of these teeth, and 
both crowns are more drawn out antero-posteriorly than in Phyl- 
lostomus) ; anterior face of upper canine without longitudinal groove; 
crowns of mandibular premolars narrower and more trenchant than 
in Phyllostomus , and a minute pm 8 wedged transversely between the 
two functional teeth; mandibular molars narrower than in Phyllos- 
tomus , with the W pattern somewhat flattened, though perfectly dis- 
tinct owing to the presence of all the normal elements of the teeth. 
Skull apparently much like that of Phyllostomus latifolius, but nasals 
probably rising more abruptly behind nares, and rostrum probably 
deeper and shorter. Mandible deeper, and symphysis menti longer 
and more oblique than in Phyllostomus latifolius. External charac- 
ters essentially as in Phyllostomus. 
