6. HYLELLA. 7. XTCTIIIANTIS. 421 



loreal region oblique ; tympanum very small, about one fourtli the 

 diameter of the eye. Fingers webbed at the base ; toes two-thirds 

 webbed ; disks moderate, those of the fingers eqiialiing the tym- 

 panum in diameter. Skin smooth, bell)- and lower siu'face of thighs 

 granulate ; a fold from axilla to groin. Light violet-grey above, 

 light yeUow beneath, 

 Tehuautepec. 



5. Hylella bicolor. 



Hyperolius ? bicolor, Giinth. Cat. p. 89. 

 Eucnemis bicolor, Grai/, Zool. 3Iisc. p. 6. 

 Hylomantis fallax, Peters, Mo7i. Berl. Ac. 1880, p. 224, pi. 1. f. 4. 



Tongue suboval, slightly nicked. Head as broad as long ; snout 

 subtriangular, rather lu'ominent, as long as the diameter of the 

 orbit ; canthus rostralis distinct ; loreal region vertical ; interorbital 

 space broader than the upper eyelid ; tympanum distinct, about 

 half the diameter of the eye. Fingers webbed at the base, first 

 shorter than second ; toes nearly entirely webbed ; disks smaller 

 than the tympanum ; subarticular tubercles moderate. The hind 

 limb being carried forwards along the body, the tibio- tarsal articu- 

 lation reaches the tip of the snoiit, or not Cjuite so far. Skin smooth, 

 belly and lower sixrface of thighs granulate ; a strong fold across 

 the chest. Bluish above, immaculate or dotted with blackish ; a 

 blackish streak on canthus rostralis and temporal region ; a white 

 band from below the eye to the shoulder, sometimes continued along 

 the side of the body ; beneath whitish, immaculate. Male with an 

 external subgular vocal sac. 



Australia. 



6. Hylella nigropunctata. 

 Hyperolius nigTopunctatus, Meyer, Mon. Berl. Ac. 1874, p. 139. 



Allied to H. hicolor. Head short ; snout very obtuse ; loreal 

 region high, slightly convex ; tympanum one fourth the diameter 

 of the eye. Tibio-tarsal articulation reaching beyond the tip of 

 the snout. Skin warty. Blue above, dotted with black ; hind 

 limbs with black cross bars ; humerus white ; breast white, belly 

 and lower sui-face of thighs yellowish. 



Jobi, New Guinea. 



7. NYCTIMANTIS, 

 Pupil erect. Tongue subcircular, scarcely free behind, entire. 



