4. BUFO. 



309 



second ; toes half webbed ; two metatarsal tubercles ; no tarsal 

 fold. The hind limb being carried forwards along the body, the 

 tarso-metatarsal articulation reaches the tympanum or the eye. 

 Upper surfaces with irregular warts; parotoids moderate, elliptic 

 or kidney-shaped. Brownish olive above, with dark-brown spots, 

 two of which form a chevron between the eyes ; generally a light 

 vertebral line ; lower surfaces immaculate or dark-spotted. Male 

 with a subgular vocal sac. 



Vak. A. americanus. 



Bufo americanus, (Leconte) Holbr. N.-Amer. Herp. v. pi. 4 ; Dum. 

 # Bibr. p. 695; Hallow. Proc. Ac. Philad. 1856, p. 251 ; Girard, 

 U.S. Mex. Bound. Sun: ii. p. 25 ; Wied, Nova Acta, xxxii. p. 121. 



quercicus, Holbr. N.-Amer. Herp. v. pi. 3. 



dorsalis, Halloiv. Proc. Ac. Philad. 1852, p. 181, and in Sit- 



greaves, Exped. Zuni fy Color. Pit: p. 142, pi. 19. 



woodhousii, Girard, Proc. Ac. Philad. 1854, p. 86. 



Chilophryne americana, Cope, Proc. Ac. Philad. 18(53, p. 357. 



Upper view of head. 



Lower surface of foot. 



son [P.]. 

 son tP.j. 



Supraorbital ridges low ; subarticular tubercles under the toes 

 generally double; inner metatarsal tubercle large, compressed, 

 spade-shaped ; outer tubercle small. 



a. Yg. Great Bear Lake. Sir J. Richardson 



b-d. Yg. Lake Winnipeg. Sir J. Richard 



e. $ • New York. 



/>.'/• 2 & albinos, yg. N. America. Dr. J. Green [P.]. 



7/-V, /.-. ? & yg. -V America. Lord Ampthill [P.]. 



l-m, n. rf 2 • N* America. 



o. 2 • America. 



p. j. Mexico. 



(This specimen is intermediate between vara. A and B.) 



q. Many spec., yg. Brazil (??). Dr. Gardiner [P.]. 



r. $ . ' Puerto Cabello (?). 



V.\n. B. rnusicus. 



Bufo rnusicus. Latr. Ii.pt. ii. p. 127; Baud. Sain. p. '.">, pi. 33. f. 3, 

 and Sept. viii. p. l'JO; Men: Tent. p. 185; Gravenh. Delic. p, 59; 



