48 KEPTILES. 



1. RHINODERMA. 



Head narrow, rather elongate; muzzle ending in a horizontal 

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

 a rudimentary membrane between; toes five, half- webbed ; an 

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

 tongue rather broader and slightly nicked behind ; eustachian tubes 

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

 subgular vocal sac. Chili. 



Ehinoderma, Ihm. ^' Bibr. viii. p. 657 ; Bell, Zool. of the Beagle, 

 Rept. p. 47. 



1. Khinoderma darwinii. 



Ehinoderma darwinii, Bum. i^- Bibr. p. 059; Bell, I.e. p. 48. pi. 20. 

 f. 1, 2. 

 Blackish, throat and breast black, belly white. 



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

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

 /. Adult : bad state. Chili. 



2. ATELOPUS. 



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

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

 eustachian tubes moderate ; fingers four, depressed, 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 subgular vocal sac {Dum. Sf Bibr.). 



Atelopus, Dum. ^ Bibr. p. 660. 



1. Atelopus flavescens. 

 Atelopus flavescens, I>um. ^ Bibr. p. 061. 

 Yellowish, spotted with brown. Cayenne. 



3. UPERODON. 



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

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

 palatine teeth. Tongue large, circidar, entire. Tympanum hidden ; 

 paratoids none; eustachian tubes moderate. Fingers four, quite 

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

 an internal subgular sac. East Indies. 



Uperodon, Dtim. Sf- Bibr. p. 746. 



Systoma, (not Wagler) Tschuili, Batr. p. 86. 



Engystoma, sp., Cuv. Rbgne Anim. 



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

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

 he says, " uii rudiment de membrane r^unit les doigts a leur base." 



