24 U. S. NATIONAL MUSEUM BULLETIN 206 



Dimensions. — Head and body 51 mm,; head length 15 mm,, width 

 17 mm, ; femur 18 mm, ; tibia 18 mm, ; foot 17 mm, ; hand 1 1 mm. 



Color in alcohol. — Dorsum pale ashy buff, with many small dark 

 spots at the bases of the tubercles, forming a coarse dark network on 

 the sacrum; dark bars across the top of the legs and dark irregular 

 stripes on sides and on posterior femur; venter, including soles and 

 palms, immaculate pale buff; center of throat of male suffused 

 with dai'k. 



Remarks. — The material at hand indicates that Aliiller and Helhnich 

 were right in considering Bufo d'orbignyi Dum6ril and Bibron as a 

 subspecies of B. qranuJosus. The main differentiating character seems 

 to be that in the southern form d'orbignyi, at least in the Argentine 

 and Uruguayan specimens at hand, as well as the single specimen 

 from the State of Sao Paulo in Brazil, the dorsal tubercles are coarse 

 and some of them are arranged in more or less parallel rows next to 

 the pale middorsal luie. Topotypic examples of the northern form 

 from Bahia as well as from Minas Gerais have the pale dorsal line 

 faintly indicated but not set off by any conspicuous arrangement 

 of the tubercles, which are smaller and more numerous than in 

 d'orbignyi, and more uniformly distributed over the back. The 

 parietal crest is scarcely developed or faintly indicated by a few small 

 tubercles in Bahia toads. In the southern form this crest is usually 

 evident, or at least it is marked by two or three fairly large tubercles. 

 The tip of the snout in the region of the nostrils is usually somewhat 

 bulbous and swollen in typical granulosus, while in d'orbignyi the 

 outline of the snout is nearly normal. Although the specimens of 

 d'orbignyi at hand are insufficient to give an adequate picture of its 

 variability, certain specimens of the northern form show a decided 

 tendency toward the d'orbignyi characters, since some of them have 

 weakly developed parietal crests while there is often more than a 

 suggestion of longitudinal rows of tubercles on each side of the dorsal 

 line. The largest d'orbignyi from Montevideo, USNM 70618, meas- 

 ures 63 mm, in total length; the largest from Ai'gentina, USNM 

 97188, is 58 mm. long. The largest granulosus from Bahia is 55 mm,, 

 while the one from Panama, USNM 53739, is 59 mm. in length. In 

 both granulosus and d'orbignyi the parotoids are less well marked 

 than in most toads. 



Specimens examined 



BRAZIL: 



Amazonas: Abura, P6rto Velho, MZUM 56777, Lower Amaz6ma, USNM 

 28932-7, Steere, 



Bahia: Bahia, USNM 97107-9, Venancio, 1923-24, Itaet6, MRHN IG 9404, 

 Reg, 71, Massart, December 1922. Joazeiro, USNM 98839, Dias, April 

 16, 1935, Toca da Onga, USNM 52613-4, Rose, June 27, 1915. 



CearX: Fortaleza, MHNP 8159 (1). 



