562 APODA [CH. XXI 



Order II. Amira. 



Amphibia which lose when adult all trace of tail, hind-limb 

 much more powerful than the fore-limb and used for leaping. 



Sub-order 1. Aglossa. Anura devoid of a tongue. Eu- 

 stachian pouch single and median. 



Ex. Pipa. 



Sub-order 2. Phaneroglossa. Anura with well-developed 

 tongue. Eustachian pouch double. 



Group I. Arcifera. 



Phaneroglossa in which the epicoracoids of opposite 

 sides overlap. 



Family (1) Discoglossidae. 



Arcifera with a round disc-shaped tongue, adherent at the 

 whole of its base ; vertebrae opisthocoelous. Teeth in the 

 upper jaw only. 



Ex. Alytes, Discoglossus, Bombinator. 



Family (2) Pelobatidae. 



Arcifera with a protrusible tongue, dilated sacral ribs and 

 with teeth in the upper jaw only. 

 Ex. Pelobates, Scaphiopus. 



Family (3) Bufonidae. 



Like the previous family, but without any teeth. 

 Ex. Bufo. 



Family (4) Hylidae. 



Arcifera with dilated sacral ribs, with teeth in the upper 

 jaw and adhesive discs on the fingers and toes. 

 Ex. Hyla, Ckoropkilus, Acris. 



Group II. Firmisternia. 



Phaneroglossa in which the epicoracoids are firmly 

 united in the middle line. 



Family (5) Ranidae. 



Firmisternia with cylindrical sacral ribs. 

 Ex. Rana. 



Order III. Apoda. 



Amphibia of worm-like appearance, without limb or tail 

 and with vestigial eyes. 



Ex. Coecilia, Hypogeophis, Ichthyophis. 



