BATRACHIAANOURA. 33 



A rudimentary membrane may be observed at their base, as also an 

 inconspicuous fold along their margins. 



The color is uniform reddish-brown, lighter beneath than above, 

 with a light line along the middle region of the back and thighs. 



This species was collected about Rio de Janeiro, Brazil, along with 

 the preceding species. 



GENUS CYSTIGNATHUS, WAGL. 



GEN. CHAR. Vomerine teeth disposed upon a transverse or oblique 

 row, more or less interrupted in the middle, and situated between 

 the inner nostrils or behind them. Tongue circular, subcircular, or 

 subcordiform ; posteriorly entire and attached by its whole surface, 

 or slightly free behind. Tympanum not always distinct. Toes 

 moderate, bordered by a membranous fold, or inconspicuously 

 webbed at their base. 



*, WAGL. Nat. Syst. Amph. 1830, 202. GRD. in Proc. Acad. 

 Nat. Sci. Philad. VI, 1853, 420. 



OBSERV. CystignatJius macroglossus, DUM. & BIBR., from Montevideo; 

 G. gracilis, DUM. & BIBR., from the same locality, and G. roseus, DUM. 

 & BIBR., from Chile, will remain in the present genus. 



1. CYSTIGXATHUS NEBULOSUS, Grd. 

 (Plate III, figs. 19-23.) 



CAR. SPEC. Dentibus vomerinis in duos acervos elongatos, oblique inter 

 inter lores nares, diftpoeitig. Tympano inconspicuo. Plantarum digi- 

 tis depressis, et plicaturd membranea marginalia. Duo luberculi in 

 mctutarso ; in tarso verd, plicatura membranea. Glandulis lumbalis 

 nullis. Cute minute (jranulata. Supra pallide fusco, albi* punc- 

 tulis comperso, colore rufnlo obscurato. Macula subtriangulari nigro- 

 fusca in occipite sita, atque post ocidis vitta ejusdem coloris. fbste- 

 rioribiis cruribus rubro-fusco fasdatis. Infra imicolori. 



SPEC. CHAR. Vomerine teeth disposed upon two elongated groups, 

 obliquely situated between the inner nostrils. Tympanum incon- 

 spicuous. Toes depressed, margined by a membranous fold. Two 



