4. BTWo. 315 



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

 tarso-metatarsal articulation reaches in front of the tympanum. 

 Tipper surfaces with irregular warts ; parotoids very prominent, 

 narrow, elongate, pointed behind ; a lateral series of large warts, 

 confluent with the parotoid. Upper surfaces brown, with large, 

 irregular, black-edged dark spots ; beneath with a few dark spots ; 

 sometimes a larger dark spot on the sternal region. Size of B. 

 calamita. 



S. Brazil ; Uruguay ; Buenos Ayres. 



a-b. 5 • Monte Video. Dr. Cunningham [P.]. 



c-d. 5 & hgr. Baenoa Ayrea. 0. Darwin, Esq. [P/j. 



e-f. 5 . Oran Salta, Buenos Ayres. E. W. White, Esc[. [0.]. 



(The latter specimens show a coloration very similar to that of B. 

 viridis.) 



56. Bufo molitor. 



Bufo molitor, Tschiidi, Faun. Per., Ilerp. p. 73, pi. 12 ; Peters, Mon. 



Berl. Ac. 1873, p. 624.- 

 andianus, Cope, Proc. Ac. Philad. 1868, p. 115. 



Appears to differ from B. marinus in the following points : — Snout 

 pinched, narrow, angulate ; tympanum less than half diameter of 

 eye ; parotoid elongate, triangular, narrow, continued into a lateral 

 dermal fold. ' 



W. S. America. 



57. Bufo marinTis. 



Bufo agua, Gunth. Cat. p. 65. 

 Seha, i. pi. 76. f. 1. 



Eana marina, Linn. 8. N. i. p. 356 ; Laur. Syn. Rept. p. 31. 

 Bufo marinua, Schneid. Hist. Amph. p. 219 ; Shaio, Zool. iii. p. 155; 



Merr. Tent. p. 182 ; Gravenh. Delic. p. 54 ; Girard, U.S. Expl, 



Exped., Herp. p. 80, pla. v. f. 1-3, & vi. f. 1-3; Steindachn. 



Novara, Amph. p. 45 ; Peters, Mon. Berl. Ac. 1872, p. 220 ; Espada, 



Viaj. Pacif., Vert. p. 195. 

 agua, Latr. Bept. ii. p. 13 ; Baud. Main. p. 99, pi. 37, and Rept. 



viii. p. 209; Spix, Spec. Nov. Test. Man. p. 44, pi. 15 ; Wied, Beitr. 



Nat. Bras. i. p. 551, and Abbild. ; Tschvdi, Batr. p. 88 ; Dum. 8f 



Bibr. p. 703 ; Hensel, Arch. f. Naturg. 1868, p. 141 ; BroccU, Bull. 



Soc. Philom. (7) i. p. 188. 



horridus, Baud. Bain. p. 97, pi. 96, and Rept. viii. p. 201. 



humeralia, Daud. Mept. viii. p. 205. 



Bombinator horridus, Merr. Tent. p. 179. 

 Bufo maouliventria, Spix, I. c. p. 4.3, pi. 14. f. 1. 



ictericus, Spix, I. c. p. 44, pi. 16. f. 1 ; Gi-avenh. I. c. 



lazarus, Spix, I. o. p. 45, pi. 17. f. 1. 



Phrynoidis agua, Cope, Proc. Ac. Philad. 1863, p. 357. 



Crown with prominent bony ridges, viz. a canthal, a preorbital, 

 a supraorbital, a postorbital, and a short orbito-tympanic ; parietal 

 ridge, if present, not very prominent ; snout short, blunt ; inter- 

 orbital space much broader than the upper eyelid ; tympanum dis- 



