336 U. S. NATIONAL MUSEUM BULLETIN 2 06 



Genus Odontophrynus Reinliardt and Liitken 



1862. Odontophrynus Reinhardt and Lutken, p. 159. (Genotype, Odonto- 

 phrynus cultripes Reinhardt and Lutken.) 



Generic diagnosis. — Habit like that of Bufo or Ceratophrys. Body 

 thick; limbs short; fingers free; toes half- webbed. Head broad; 

 opening of mouth very large; tongue oval, free posteriorly and 

 slightly indented. Maxillary and vomerine teeth present; no pala- 

 tine teeth. Tympanum hidden. Skin rough; parotoid glands 

 present. 



Upon examining some specimens from Patagonia, USNM 15123-4, 

 identified as Bufo variegatus (Giinther), I found that they were very 

 close indeed to Odontophrynus. In my opinion, variegatus should be 

 considered as a third species of the latter genus. As this species 

 does not occur within the geographic area covered here, no further 

 discussion of it can be given. 



Key to species of Odontophrynus of southeastern Brazil 



o'. Large parotoid glands present cultripes (p. 338) 



a^. No enlarged parotoid glands americanus (p. 336) 



Odontophrynus americanus (Dumeril and Bibron) 



Plate 31, Figures a, b 



1841. Pyxicephalus americanus Dum:6ril and Bibron, p. 446 (type locality, 

 Buenos Aires, Argentina). — Bell, 1843, p. 40, pi. 14, figs. 2, 2,a. — 

 Bibron, 1847, p. 10, pi. 14, figs. 1-4. — Gunther, 1858, p. 24. — Hensel, 

 1867, p. 123.— EsPADA, 1875, p. 20. 



1862. Pyxicephalus [—], n. sp. Cope, 1862b, p. 352. 



1862. Ceratophrys americana Boulenger, 1882a, p. 266; 1885a, p. 195; 1886b, 

 p. 440; 1894, p. 348.— Boettger, 1885, p. 30 in sep.; 1892, p. 29.— 

 Peracca, 1895, p. 25.— Berg, 1896, pp. 150, 167.— Battmann, 1912, 

 p. 161.— Nieden, 1923, p. 386.— Marelli, 1924, p. 585.— Mertens, 

 1925a, p. 16; 1925b, p. 209; 1926a, p. 6, fig. 5; 1926b, p. 4. 



1920. Odontophrynus americanus Miranda-Ribeiro, 1920d, pp. 299, 304, pis. 

 4, 5; 1926, pp. 130, 214, pi. 17, figs. 1, l,a; 1937a, p. 56,— Scott-Bir- 

 abiSn and FernAndez-Marcinowski, 1921, p. 129. — Muller and 

 Hellmich, 1936, p. 32, fig. 33. -Schubart, 1939, p. 55. 



1843. Tomopterna americanus Fitzinger, p. 32. 



Description. — Adult male, USNM 123400, Bertioga, Sao Paulo. 

 Vomerine teeth in two heavy, transverse, nearly contiguous series 

 between the choanae; toQgue not quite one-half the width of mouth- 

 openiag, cordiform, free posteriorly and with a deep notch; snout 

 short and rounded when seen from above, sloping and truncate in 

 profile, the upper jaw scarcely projecting beyond the lower; nostrils 

 superior, slightly projecting, situated at the tip of the snout, separated 

 from each other by an interval equal to their distance from eye. 

 Canthus rostralis bluntly rounded; loreal region slightly concave. 



