242 ON THE GLOSSOPHAGIN®. 
a. Median upper incisors larger than lateral; premolars 2; crown of lower canine 
with base lying inside position of lateral incisor; median incisor foramen 
barely in advance of paired foramina; upper incisors inclined; pit over 
proximal third of face vertex. 
b. Upper incisors in continuous row; molars 3; thumb one-fourth the 
length of forearm (31-34 mM. )....<.- 2.0... .2..cee-seescusecucccnescensscneneeans Glossophaga. 
b. Upper incisors with wide interval between centrals; molars 2; thumb 
one-sixth the length of forearm (45 mm.)..-.--+-+sseeeeeeeeeeeees Leptonycteris. 
3. 
£; crown of lower canine 
a’. Median upper incisors smaller than lateral; premolars 
with base not lying inside position of lateral incisor; median incisor fora- 
men well in advance of paired foramina ; upper incisors vertical. 
e. Lower canine compressed, with cingulum; metacarpal bone of 
thumb exceeds length of phalanges. 
d. No phalanx to second digit of manus; premolars #; tail 
present; thumb one-seventh the length of forearm 
(AD aa, )) coscocmos ooocoasenocotosacoSeconUncoodISCoROASEnoSoACoSADCSOSS Charnycteris. 
c’. Lower canine rotund, no cingulum; metacarpal of thumb equal 
length of phalanges. 
d'. Phalanx to second digit of manus; tail present; thumb 
one-eighth the length of forearm (38 mm.).......-....-...-+5 Lonchoglossa. 
d''. No phalanx to second digit of manus; no tail; thumb 
one-sixth the length of forearm....-..--.-+.-.:01.eseeeeseeseen Armura. 
Palatal portion of premaxilla not rostrum-like; gland mass crosses muzzle back of nose leat ; 
tympanic bulla almost touches postglenoid process; occipito-squamosal suture with large 
Tul. foramen; ethmoid bone not convex in brain case; an ectopterygoid lamina. In 
third to fifth manal digits first and second phalanges equal; premolars 3; molars }; fim- 
brize of tongue at tip only. 
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L 
Glossophagina aberrantia. 
Tail present; exceeding short interfemoral membrane; 
thumb one-fourth the length of forearm (45 mm.)..Phyllonycteris. 
Glossophaga soricina Pallas. 
Auricle emarginate at upper half of the outer border ; internal basal lobe free from 
head and indications of basal ridge. Lappet in side of the external basal lobe stout, 
pointed. Wing membrane from ankle. Terminal cartilage, fourth digit spatulate. 
Rudiment of an ascending process from the zygoma. 
Auricle subrounded, internal basal lobe with suggestion of vertical ridge, outer 
margin of auricle sinuate ; external basal lobe large, obtuse, retroverted, internal lappet 
a mere projecting nodule. Tragus straight on inner, convex or obscurely serrate on outer, 
margin. The nose leaf hairy and small, midrib confined to the pedicle. The leaf proper 
projecting nearly one-half its length above the conspicuous gland mass. The upper lip 
as well as the borders of the groove in the upper lip furnished with four to nine minute 
warts. Above, the fur is dark, sooty gray, at the tip the remainder of the hair being 
lighter but nowhere white. Beneath paler, unicolored. Interfemoral membrane almost 
