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 Gkav., Rana marina L., Bufo cujua Daud. et alior., Seba Thesaur. i. 

 Tab. 76, fig. I, Daud. Eain., Gren. et Crap. PI. 36, 37, Max. Neuw. Abb. 

 ziir Naturgesch. Bras.; the largest species of toad, 10"- — 12" without the 

 legs; in diflTerent parts of South America. Bufo margaritifer Daud., 

 Rana typlwnia L., Daud. 1. 1. PI. 33, fig. r, 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. Cuviek forms from this species his sub-genus Otilophus. 



** Membrane of Tympanum concealed. 

 Lateral tuberosities behind the eyes none. 



Ujyerodofi DvM. and BiBR. Palatine teeth. Head small, round- 

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

 orbicular, large. 



Sp. Uperodon marmoratus, Engystoma marmoraium Cuv., Guerin Iconogr., 

 Rej)t. PI. 27, fig. 3. Bengal. 



PhryniscKS WiEGM. Palatine teeth none. Tongue oblong, free 

 posteriorly. 



Sp. Phryniscus nigricans Wiegm. Monte Video. 



Brachycephalus FiTZ., E'pMjiinfer 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 Meer., Systoma 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. 



JVote. — On some other sub-genera, omitted here, comp. Dumer. c^Bibron, 

 VIII. pp. 640 — 760. 



I 



