6. HTIEILA. 419 



forming cross bars ; beneath brownisb. Male without vocal sac. 

 From snout to vent 60 mUlim. 

 Venezuela ; Central America. 



«• d. ' Cordova. M. Sall^ [C.]. 



6. HYLELLA*. 



Hylella, Reinh. ^ lAith. Vidmsk. Meddel. 1861, p. 199 ; Cope, Nat, 

 Hist. Hev. 1865, p. 110, and Journ. Ac. Philad. (2) vi. 1866, p. 86. 

 Exerodonta, Brocchi, Bull. Soc. Philom. (7) iii. p. 19. 

 Hylomantia, Peters, Mm. Berl. Ac. 1880, p. 223. 



Pupil horizontal. Tongue circular or euboval, slightly nicked 

 and free behind. Vomerine teeth none. Tympanum distinct or 

 indistinct. Fingers webbed at the base ; toes extensively webbed, 

 the tips dilated into regular disks. Outer metatarsals united. 

 Omosternum cartilaginous : sternum a cartilaginous plate. Dia- 

 pophyses of sacral vertebra moderately dilated. 



Tropical America ; Australia. 



Synopsis of the Species. 



I. Tympanum indistinct, very small. 



Tongue oval ; loreal region vertical ; 



fingers one-third webbed 1. tenera, p. 419. 



Tongue round ; fingers one-third 



webbed ; tympanum surmounted by 



a fold 2. carnea, p. 420. 



Tongue rouhd ; loreal region oblique ; 



fingers not one-third webbed 3. huekleyi, p. 420. 



II. Tympanum perfectly distinct. 



Tympanum one fourth thediameter of the 



eye ; disks of fingers of the same size 



as the tympanum; skin smooth above. 4. sumicJirasti, p. 420. 

 Tympanum half the diameter of the 



eye ; disks of fingers smaller than the 



tympanum 5. bicolor, p. 421 . 



Tympanum one fourth the diameter of 



the eye ; skin warty above 6. nigropunctata, p. 421. 



1. Hylella tenera. 



Hylella tenera, Beinh. ^ Liitk. Vidensh. Meddel. 1861, p. 200. 

 Tongue oval, slightly nicked. Head short and broad; canthus 



* HyperoKus pygmtBUS, Meyer, Men. Berl. Ac. 1874, p. 132.— Jobi, New 

 Guinea. 



2e2 



