498 PHTLLOSTOMID^. 



Moiiojihyllus and Ischnoglossa they are separated into pairs by a nar- 

 row interval in front ; while in LoncTioglossa, Glossonycteris, and 

 Chceronycteris they are widely separated and placed in pairs near the 

 canines : in the first four genera the lower incisors are present (at 

 least up to a certain age), in the latter three they are deciduous even 

 in youth. The zygomatic arch is undeveloped in PhyUonycteris 

 (■which agrees with Carollia in this respect as well as in dentition), 

 in Glossonycteris, and in Choir any eter is. 



Synopsis of the Genera . 



a. Slolars with more or less distinct W-shaped 

 cusps. 

 a'. Inner upper incisors larger than the outer 

 ones. 

 a". Upper incisors in a row between the 

 canines. 

 a'". Zygomatic arch complete; interfe- 

 moral membrane well developed; 



premolars j:^, m. g^^g 16. Glossophaqa, 



b'". Zygomatic arch imdeveloped ; inter- [p. 49J. 



femoral membrane very narrow; ^ 



2 3 3 



premolars l^^, m. g^g 17. Phyllonyctebis, 



6". Upper incisors in pairs, separated by a IP- °^1- 



small space, 

 c'"- Zygomatic arch complete; tail ex- 

 tending beyond the narrow inter- 

 femoral membrane; premolars g^, 



3 3 



m. g^g 18. MONOPHYLLUS, 



d'"- Zygomatic arch complete; no tail; [p. 503. 



iuterfemoral membrane very nar- 



2 2 2 2 



row ; premolars 335, m. -^^ 19. IsCHNOGLOSSA, 



b'. Irlner upper incisors smaller than the outer [P- '^Oo. 



ones. 

 b". Upper incisors in pau's, separated by a 

 ■wide space. 

 «'". Zygomatic arch complete ; premolars 



5;^ m. g-^; tail and interfemoral 



membrane very short 20. Lonchoglossa, 



/'". Zygomatic arch undeveloped; pre- [ p. 506. 



g g 3 3 



molars g^g, m. 333 21. Glossonycteeis, 



b. Molars very narrow,without distinct W-shaped [P- ^08. 



cusps. 

 v. Inner upper incisors smaller than the outer 

 ones. 

 b". Inner iipper incisors in pairs, separated 

 by a ■wide space. 

 ^'".Zygomatic arch undeveloped; pre- 



molars g^^g, m. ^^^ ; first upper pre- 

 molar deciduous ; tail short ; inter- [p. 509. 

 femoral membrane well developed . . 22. Chceeonyctbris, 



