6 INTRODUCTION. 



the former author's so far as the grouping of the 

 European genera is concerned. 



7. Lataste, 1879. 



LiEVOGYRINID^E S. PrOCCELIPJE : 



Vertebrae proccelous ; tadpole with" 

 sinistral spiraculum. 



Mediogyrinid^ s. Opisthoccelid^ 



'Ranidse . Rana. 



Hylidse . Hyla. 



Bufonidse . Bufo. 



Pelobatidie 



(Pelobates. 

 \Pelodytes. 



DM: ( j,. i •■, (Discoglossus. 

 Vertebrae opistboccelous ; tadpole^ " \Bombinator. 



with medial spiraculum. \Alytidse . Alytes. 



The Alytidm are separated from the DiscogJossidse 

 on account of the shape of the pupil and the aberrant 

 mode of parturition and development. 



The classification adopted in this work is shown in 

 the following synopsis, which also includes a list of 

 all the species represented in Europe. 



Order ECAUDATA. 

 Sub-order Phaneeoglossa. 

 Eustachian tubes separated ; tongue present. 



Series A. — Aroifbea. 



Coracoids and prsecoracoids connected by an arched 

 cartilage (the epicoracoid), that of the one side over- 

 lapping that of the other. 



Family 1. — Discoglossid^e. 



Vertebrae opistboccelous ; short autogenous ribs 

 attached to the anterior diapophyses ; diapophyses 

 of sacral vertebra dilated ; upper jaw toothed. 



