TIATKACIIIA SALIENTIA, 47 



3. HEMISUS. 



Head very small, not distinct from body ; mnzzlc distinct, pointed ; 

 month beneath the muzzle, small ; thigh and amis rather short ; 

 tooth, none in jaws nor in palate ; lower jaw witli three tooth-like 

 protul)t>ranees in front. Tongue cUiptical : no tympanum, no ca\iim 

 tympani, no eastaehian tubes* ; fingers four, quite free ; toes five, 

 free ; metatarsus with a flat, sharji, oval spur. Africa. 



Engystoma, sp., Rapp. 



1. Hemisus guttatiim. 



Engystoma guttatum, R<ipp, in Erichsonn Archiv, 1842, p. 290. t. 0. 

 f. 3, 4 ; Smith, III. of S. Afr. App. p. 27. 



Skin smooth. Above blackish browii with round whitish spots, 

 beneath imifonn whitisli. 



a. Adult. Tvordofan. 



b. Adult. Africa. From Mr. Frank's Collection as E. grdneense (?). 



c. Adult : not good state. Africa. From the stomach of a Lepto- 



deira 7'2ifesccns. 



The separation of this species from the Indian Dlplopehna and 

 the American Eiif/ysfoma appears to be the more justified, as, liesides 

 the difforont structtire of the ear, it differs in ha^"ing a perfect cla- 

 vicula, entirely wanting in the genera mentioned. 



To this genus perhaps belongs Engi/stoma marmoratum, Peters, 

 Wiegm. Arch. 1855, p. 58. Mozambique. 



Section IV. Bufonina. 



0. OXTDACTYLA without maxUlary teeth and with perfectly deve- 

 loped ear. 



Fam. 1. RHINODERMATIDiE. 



Bufonina with webbed toes, with the processes of sacral verfebra 

 dilated, and without paratoids. 



Synopsis of the Genera. 



1. Rhinoderma. Muzzle ending in a dermal lobe. Chili. 



2. Atelopus. Outer toe indistinct. Cayenne. 



3. Uperodon. Vomerine teeth. East Indies. 



4. Diplopelma. Five distinct toes ; muzzle distinct, rounded in 



front ; no vomciine teeth. East Indies. 



* i/fiiavi half, and ovs car. 



