1. EXGYSTOMOPS. 275 



The BufonUbn include terrestrial, burrowing, thoroughly aquatic 

 (Neetes), and apparently arboreal (Neclopliryne) types ; SMnophrynus 

 is a true ant-eater, as arc several forms of Engystomatidce. 



Synopsis of the Genera. 



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



1. Engystomops, p. 27-5. 

 Fingers and toes free ; sternum a weak cartilage. 



2. Pseudophrync, 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 semiossified style 4. Bufo, p. 281. 



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



5. Neetes, p. 327. 

 Vomerine teeth ; a dermal ridge between the choanse ; sternum 



rudimentary 0. Notaden, p. 328. 



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



line 7. Myobatrachus, p. 328. 



Pupil erect ; tongue free in front ; sternum rudimentary. 



8. Pvhinophrymis, p. 32!J. 



. ENGYSTOMOPS. = 6 ty<it^rt^&^'. 



Paludicola, (mm Wagler) Cope, Proc. Ac. Philad. 1864, p. 180. 

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

 Microphryne, Peters, Man. Perl. Ac. 1873, p. 616. 

 Peralaimos, Espada, Vioj. Pcicif, Vert. p. 163. 



Pupil 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- 

 physcs of sacral vertebra moderately dilated. Terminal phalanges 

 simple or anchor-shaped. 



Tropical America. 



Synopsis of the Species. 



Tympanum hidden : tibio-tarsal articulation 



not reaching the eye 1. pustulosis, p. 27o. 



Tympanum more or less distinct ; tibio-tarsal 



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



Tympanum very distinct, half the width of 



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



1 . Engystomops pustulosus. 



Paludicola pustulosa, Cope, Proc. Ac. Philad. 18U4, p. 180. 

 Microphryne pustulosa, Cope, Journ. Ac. Philad. (n. s.) viii. p. Io-j. 



x 2 



