48 



1. RHINODERMA. 



Head narrow, rather elongate ; muzzle ending in a horizontal 

 dermal lobe ; mouth moderate ; extremities moderate ; fingers four, 

 a rudinu^ntarj- membrane between ; toes Hve, lialf- webbed ; an 

 inchstinct tubercle on the talon. Teeth, none in jaws nor in palate ; 

 tongue rather broader and slightly nicked behind ; enstacliian tubes 

 small. Skin smooth ; tympanum liidden ; male with an internal 

 subgular vocal sac. Chili. 



Ehinoderma, Ihmi. ^- Bibr. viii. p. 657; Bdl, Zool. of the Beayle, 

 Eept. p. 47. 



1. Rhinoderraa darwinii. 



Rhinodenna darwinii, Dnm. ^S' Bibr. p. 050; Bell, I.e. p. 48. pi. 20. 

 f. 1, 2. 



Blacldsh, throat and breast black, belly white. 



a-d. Adult. Chili. Presented by Charles Darwin, Esq. 

 e. Adult. Chili. From M. Parzudaki's CoUeetion. 

 /. Adult: bad state. Chili. 



2. ATELOPUS. 



Tongue elongate, siibeUiptical, entire, rounded and equal at each 

 end. Teeth, none in jaws nor in palate. Tympanum hidden ; 

 eustachian tubes moderate ; fuigers four, dei)ressed, quite free* ; 

 toes five, outer one indistinct, the other four flattened and webbed at 

 the base. Metatarsus without any tubercles. Male with an in- 

 ternal subgidar vocal sac (Duni. 4' Bihr.). 



Atelopus, Bum. ic Bihr. p. 660. 



1 . Atelopus flavescens. 



Atelopus tiavesceus, Dum. i^- Bibr. p. 061. 

 YeUowLsh. spotted with brown. Cayenne. 



3. UPERODON. 



Head rather short, not very distinct from body ; miizzle distinct, 

 broad, rounded ; mouth smaU ; thigh and arms rather short ; only 

 palatine teeth. Tongiie large, circular, entire. Tympanum hidden ; 

 paratoids none ; eustachian tubes moderate. Fingers four, quite 

 free ; toes five, half-^vebbcd. Sacral vertebra dilated. Male with 

 an internal subgular sac. Ea.st Indies. 



Uperodon, Dum. i>c Bibr. p. 746. 



Systoma, (not Wugler) TschmU, Batr. p. 86, 



Engystoma, sp., Cur. Rhjne Anim. 



* I hare never seen the animal : in the diagnosis of tlie genus, Bibron describes 

 the fingers as " complitcmcnt libres ; " but in the description of tlie only species, 

 he says, " un rudiment de membrane reunit les doigts a Icur base." 



