1. ESTGTSTOMOPS. 275 



The Bufonidm include terrestrial, burrowing, thoroughly aquatic 

 {Nectes), and apparently arboreal (Neciophryne) types ; BTiinophrynus 

 IS a true ant-eater, as are several forms of Engystomatidce. 



Synopsis of the Genera. 



Fingers free, toes nearly free ; sternum -with a well-ossifled style. 



1. Engystomops, p. 275. 

 Fingers and toes free ; sternum a weak cartilage. 



2. Pseudophryne, p. 277. 

 Fingers and toes more or less webbed, the tips dilated into regular 



disks ; sternum cartilaginous 3. Nectophryne, p. 279. 



Fingers free, toes more or less webbed ; sternum either cartilaginous, 



or with a semiossifled style 4. Bufo, p. 281. 



Fingers free, toes very broadly webbed ; nostrils directed upwards. 



5. Nectes, p. 327. 

 Vomerine teeth ; a dermal ridge between the choanss ; sternum 



rudimentary 6. Notaden, p. 328. 



PupH erect ; fingers and toes free ; sternum ossified on the median 



line 7. Myobatrachus, p. 328. 



Pupil erect ; tongue free in front ; sternum rudimentary. 



8. Ehinopliryiius, p. 329. 



1. ENGYSTOMOPS. 



Pahidicola, (non Wagler) Cope, Proc. Ac. Philad. 1864, p. 180. 

 Engystomops, Espada, An. Soc. JEsp. i. 1872, p. 86. 

 MicropLryne, Peters, Mm. Berl. Ac. 1873, p. 616. 

 Peralaimos, Espada, Viaj. Pad/., Vert. p. 163* 



PupU horizontal. Tongue elliptic, entire and free behind. Vo- 

 merine teeth none. Tympanum distinct or hidden. Fingers free, 

 toes nearly free, the tips simply swollen. Outer metatarsals united. 

 A cartilaginous omosternum; sternum with a bony style. Diapo- 

 physes of sacral vertebra moderately dilated. Terminal phalanges 

 simple or anchor-shaped. 



Tropical America. 



Synopsis of the Species. 



TjTupanum hidden ; tibio-tarsal articulation 



not reaching the eye 1. pustulosus, p. 275. 



Tympanum more or less distinct ; tibio-tarsal 



articulation reaching the eye 2. stenior, p. 276. 



Tympanum very distinct, half the width of 



the eye ; distal phalanges anchor-shaped . . 3. petersii, p. 276. 



1. Engystomops pustulosus. 



Paludioola pustulosa, Cope, Proc. Ac. PMlad. 1864, p. 180. 

 Microphryne pustulosa, Cope, Journ. Ac. Philad. (n, s.) viii. p. 155, 



T 2 



