THE FAMILIES AND GENERA OF BATS. 137 



KEY TO THE GENERA OF GLOSSOPHAGIN^:. 



2 — 2 



Molars 



2-2' 



Lower premolars 2-2 Leptonycteris, p. 142. 



Lower premolars 3-3 Lichonycteris, p. 143. 



Molars |d?. 



Upper premolars 3-3. 



A very rudimetary tail concealed in base of interfemoral mem- 

 brane; zygomatic arch slender, but definitely ossified ; outer 

 upper incisor subterete; anterior upper premolar nearly in con- 

 tact with canine Lonchoglossa, p. 140. 



No external tail; zygomatic arch incomplete or partly ossified; 

 outer upper incisor with section of crown conspicuously ellip- 

 tical ; anterior upper premolar separated from canine by space 



equal to length of its base Anoura, p. 139. 



Upper premolars 2-2. 



Lower incisors well developed in adult. 



Upper incisors showing no marked contrast in size; lower in- 

 cisors with broad, flat crown ; zygomatic arch complete. 



Glossophaga, p. 137. 

 Upper incisors showing marked contrasts in size; lower in- 

 cisors with narrow trenchant crowns ; zygomatic arch in- 

 complete Lonchophylla, p. 139. 



Lower incisors minute or absent in adult. 



Zygomatic arch complete ; lower incisors usually present in 



adult, but very minute Monophyllus, p. 139. 



Zygomatic arch not complete ; lower incisors absent in adult. 

 Pterygoids convex on inner side, the hamular processes 



not in contact with audital bullae Hylonycteris, p. 142. 



Pterygoids deeply concave on inner side, the hamular 

 processes in contact with audital bulla?. 



Chceronycteris, p. 141. 



Genus GLOSSOPHAGA Geoffroy. 



1818. Glossophaga Geoffboy, Mem. Mus. d'Hist. Nat. Paris, IV, p. 418 



(soricina). 

 1838. Phylloplwra Gray, Mag. Zool. and Bot, II, p. 489 (amplexicaudata= 



soricina). Not of Thunberg, 1812. 

 1847. Nicon Gray, Proc. Zool. Soc. London, p. 15 (caudifer=soricina). 

 1878. Glossophaga Dobson, Catal. Chiropt. Brit. Mus., p. 499. 

 1898. Glossophaga H, Allen, Trans. Amer. Philos. Soc, n. s., XIX, p. 240. 



Type-species. — Vespertilio soricinus Pallas. 



Geographic distribution. — Warmer parts of America, north to 

 central Mexico, and in the West Indies to Jamaica. 

 Number of forms. — Six species of Glossophaga are now recognized. 

 Characters. — Dental formula (Plates III, IV, fig. 2) : 



- 2 3. 1. - - 3 4 5 6 7 - 2-2 1-1 2-2 3-3 

 12-. 1.-234567 *2-2' l-l'^ m 3-3' ™3-3~ d4: - 



