254 CLASS xv. 



a yellow-green iris, which in the preceding species is red or gold-co- 

 loured ; often a yellow stripe along the middle of the back. Bufo mari- 

 nus GEAV., Rana marina L., Bufo agua DAUD. et alior., SEBA Thesaur. I. 

 Tab. 76, fig. i, DAUD. Rain., Gren. et Crap. PI. 36, 37, MAX. NEUW. Abb. 

 zur Naturgesch. Bras.; the largest species of toad, 10" 12" without the 

 legs; in different parts of South America. Bufo margaritifer DAUD., 

 Rana typhonia L., DAUD. 1. 1. PI. 33, fig. i, MAX. NEUW. Abb. z. Naturg. 

 Bras, (under the name of Bufo oxyrhynchus] also from South America; on 

 each side of the head above the orbit runs a bony ridge ; the cranium is 

 excavated above. CUVIER forms from this species his sub-genus Otilophus. 



** Membrane of Tympanum concealed. 

 Lateral tuberosities behind the eyes none. 



Uperodon DUM. and BIBR. Palatine teeth. Head small, round- 

 ed. Gape of mouth narrow. Tongue adnate, free at the margin, 

 orbicular, large. 



Sp. Uperodon marmoratus, Engystoma marmoratum Cuv., GUERIN Iconogr., 

 Rept. PI. 27, fig. 3. Bengal. 



Phryniscus WlEGM. Palatine teeth none. Tongue oblong, free 

 posteriorly. 



Sp. Phryniscus nigricans WIEGM. Monte Video. 



Brachycephalus FiTZ., Ephippifer CoCTEAU. 



Microps WAGL., FITZ. (previously Engystoma FITZ., in part), 

 Stenocephalus TSCHUDI. Palatine teeth none. Eyes small. Head 

 small, anteriorly acute, triangular. Gape of mouth small. 



Sp. Microps ovalis nob., Rana ovalis SCHN., Microps unicolor WAGL., Engy- 

 stoma ovale DUM. and BIBR., DAUD. 1. 1. PI. 33, fig. 2, GUERIN Iconog., 

 Rept. PI. 27, fig. 2 ; a very small species from South America. 



Breviceps MERE., Sysioma WAGL. Palatine teeth none. Head 

 continuous with trunk, very short, truncate; gape of mouth very 

 narrow. Feet short, immersed at the base in trunk. Body 

 gibbous. 



Breviceps gibbosus MERREM, Rana gibbosa L., LACEP. i. PI. 40, DAUD. 

 1. 1., PI. 29, fig. 2, PI. 35, fig. 2, in South America. 



Note. On some other sub-genera, omitted here, comp. DUMER. et BIBRON, 

 vni. pp. 640 760. 



