VI 



PELOBATIDAE 



l6l 



nicked, aud free behind, so tluit it can be thrown ont, except 

 in Adevophrys turpicola of New Gninea, which has a large but 

 entirely adherent tongue. The vertebrae are procoelous, except 

 in Asterophrys and the ]\Ialay genus Megalophrys, where they 

 are opisthocoelous. The sacral diapophyses are strongly dilated. 

 The oniosternuni is small and cartilaginous. The metasternuni 

 lias a bony style, and ends in a cartilaginous, rounded or heart- 



^ CYSTIGNATHIDAE. Hlllll DISCOGLOSSIDAE. ^<^'' PELOBATIDAE. 

 Fu;. 32. — Map showiug distribution of Cystignathidae, Discoglossidae, and Pelobatidae. 



shaped disc, but in Scaphiopus it forms an entirely cartilaginous 

 plate. The tympanic disc is mostly hidden or indistinct, and is 

 quite ab.sent in Pelohates. The Eustachian tubes are very small in 

 Felobates, and exceedingly minute in Scaphiopus staynalis of Xew^ 

 Mexico. The pupil is vertical. This family contains seven 

 genera with about twenty species, with a rather scattered 

 distribution. 



A. Toes extensively webbed, sacrum and coccyx confluent. 



a. Metasternum a cartilaginous plate. America 

 h. Metasternvuu with a bony style. Euroije 



B. Toes nearly free. Metasternum with a bony style 



((. Vertebrae procoelous. 



u. Sacral vertebra articulating by one con- 

 dyle with the coccyx. 

 (Europe 

 \New Guinea 

 ft. Sacral vertebra with two 

 India and Malaya 

 h. Vertebrae opisthocoelous. 



f Ceylon and IMalayan Islands . 

 I^Xew Guinea . 

 VOL. VIII 



Scaphiojiiis, p. 164. 

 Pelohates, jj. 162. 



Pelodytes, jj. 165. 

 Batrachoj)sis. 

 condyles. 



Leptobrachium, p. 166. 



Megalophrys, p. 60 'Vvj,. Ill 

 Asterophrys. - 



.M 



