HYLONYCTERIS. MONOPHYLLUS. 675 



1;>2. Hyloiiycteris. 



T 2 ~ 2 . f I=. p ?=. M 3-3 _ 

 1.5=5; <--,_,, *V 3 , M. 3 _ 3 _30. 



Hylonycteris Thomas, Ann. Mag. Nat. Hist., ;th Ser., xi, 1903, 



p. 286. Type Hylonycteris underwoodi Thomas. 

 External characters as in Chceronycteris ; upper incisors very small; 

 lower incisors absent; no diastema behind upper canines; skull with 

 elongated bony palate, posterior nares level with middle of glenoid 

 surfaces ; basioccipital with a prominent median ridge continuous with 

 a similar vomerine ridge, and deeply excavated on each side; no 

 zygomatic arch. 



635. underwoodi (Hylonycteris}, Thomas, Ann. Mag. Nat. Hist., ;th 



Ser., xi, 1903, p. 287. 

 UNDERWOOD'S BAT. 



Type locality. Rancho Redondo, Costa Rica. 



Geogr. Distr. Rancho Redondo and Tarbaca, Costa Rica, Central 

 America. 



Genl. Char. Muzzle medium length; nose-leaf small, narrow, 

 pointed without distinct midrib; ears with inner margin convex, tip 

 rounded, outer margin slightly concave above, then convex, the 

 pointed antitragal portion separated by a deep notch; wings from 

 the ankles ; wing and interfemoral membranes bare ; tooth rows diver- 

 ging posteriorly. 



Color. Seal brown above, crown nearly black; under parts paler. 



Measurements. "Nose-leaf, 5.3; ear, n.<c; thumb and claw, 10; 



' *J \J * \} ' 



index, 32; third finger, metacarpal, 33.5; first phalanx, 14; second 

 phalanx, 18.5; fifth finger, metacarpal, 29; first phalanx, 7.3; second 

 phalanx, n; tibia, 12; foot and claws, 9.8; calcar, 6; tail, 6; inter- 

 femoral at center, 13. Skull: greatest length, 13; basal length, 20.3; 

 interorbital breadth, 4.2; breadth of braincase, 8.6; palatal length, 

 14.2; front of canine to back of third upper molar, 8.5; same to back 

 of third lower molar, 8.8; tip of muzzle to back of zygoma root, 9.8." 

 (Thomas, 1. c.) 



153. Moiiophyllus. 



Monophyllus Leach, Trans. Linn. Soc., xni, 1820, p. 75. Type 



Monophyllus rcdmani Leach. 



Nose-leaf, ears, and tragus as in the genus Glossophaga; muzzle 

 longer, broader; tongue longer, covered with filiform papillae; tail 



