CLASS REPTILIA. 



tifera, Laur. Bufo margaritifera, Daud. Oli. ocellata, 



Tympanum, obscurely seen through the skin. Dark brown, 

 with white edged brown spots. 



B. Tongue distinct ; tympanum hidden; toes ^, inner clawed ; 

 mouth toothed. Dactylethra, Cuv. Engystoma, Fit%. not 

 Merrem. Xenopus, Wagler. 



Xenopus Boiei, Wag. Pipra Buffonia, Mer. Bufo laevis, 

 Daud. Pipa laevis, Mer. Engystoma ovalis, Fitz. ? — Rana 



fasciata of BurchePs Travels, may belong to this genus. 



Xenopus ovalis, Rana ovalis, Schn. Microps unicolor, Wag. 



C. Tongue distinct, tympanum hidden ; toes clawless ; 



tnouth large, eyebrows rounded. Bombinator. 



B. igneus. Rana bombina, Gm. variegata, Lin. Bom- 

 binator Daudini, Bufo ventricosus, Daud. Engystoma ven- 

 tricosa, Fitz. 



D. Mouth large ; eyebrows acute. Strombus, Gray. 



Ceratophys granulata, Cuv. C. Boiei, Pr. Max. Physa- 

 lamis Cuvieri, Fitz. 



E. Mouth and head small, paratoides 7ione ; toes, 5, 4. Bre- 

 viceps. Engystoma, part Fitz. 



Breviceps gibbosus, Bufo gibbosus, Daud. Engystoma 



dorsatum, Cuv. Seba. R. systoma, Schn. Breviceps mar- 



moratum, Engyst. marmoratum, Cuv. not described. Bre. 



granosus, Engyst. granosus, Cuv. Bre. Surinamensis, R. 



Suninamensis, Daud. R. Bufonia, Mer. Bre. globulosus, 



Bufo, glo. Spix, t. 19, f. 1. Chaunus marmoratus, Wagler. 



Bre. albifrons, Bufo albifrons, Spix, t. 19, f. 2. Paludi- 



cola albifrons, Wagler. Bufo ephippium, Spix. This 



species has only three toes on all the feet, and Fitzinger has 

 made a genus of it, therefore, under the name of Brachy- 

 cephalus. 

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