290 bufonidjB. 



tympanum small. Toes sliglitly webbed at tie base ; no tarsal 

 fold. Parotoids elongate. Brownish yellow or bluisK slate above, 

 dark-spotted ; beneath immaculate. 



United States (Chihuahua, Sonora, Lower Eio Grande). 



10. Bufo hsematiticus. 



Bufo hssmatiticus, Cope, Proc. Ac. Thilad. 1862, p. 157 ; Keferst. 



Oott. Nachr. 1867, p. 353, and Arch. f. Naturg. 1868, p. 295, 



pi. 9. f. 7. 

 Ensebo hsBmatiticus, Cope, I. c. p. 357. 



Crown without bony ridges ; snout short, obliquely truncated, 

 with angular canthus rostralis ; loreal region vertical ; interorbital 

 space broader than the upper eyehd ; tympanum very distinct, 

 about half the width of the eye. Kngers slender, with . slightly 

 swollen tips, first extending beyond second ; toes short, webbed at 

 the base, with slightly swollen tips ; subartioular tubercles simple, 

 not very prominent ; two slightly developed metatarsal tubercles ; 

 a thin tarsal fold. Limbs slender. The hind limb being carried 

 forwards along the body, the tarso-metatarsal articulation reaches 

 beyond the tip of the snout. Skin perfectly smooth everywhere, or 

 with very small tubercles on the upper surfaces ; parotoids large, 

 elliptic, angular externally. Brown above ; a light line from the 

 tip of the snout along the canthus rostralis, the edge of the eyelid, 

 the parotoid, and the side of the body to the groin ; sides of head 

 and body below this line reddish brown ; a light spot below and in 

 front of the eye ; a few large, symmetrical, light-edged spots on the 

 back ; a few transverse, black, light-edged spots on the limbs ; 

 brown beneath, marbled with darker. 



Colombia ; Costa Eica. 



a. 5 • Costa Eica. 



b-c. Hgr. ' Costa Eica. 0. Salvin, Esq. [0.]. 



11. Bufo guttatus. 



Bufo leschenaultii, Giinth. Cat. p. 64. 

 Bufo guttatus, Sehneid. Hist. Amph. i. p. 218 ; Wiegm. Isis, 1833, 



p. 657 ; Feters, 3Ion. Berl. Ac. 1863, p. 81. 

 leschenaultii, Tachudi, Batr. p. 89 ; Dum. ^ Bibr. p. 666, pi. 91. 



f. 1. 

 Ehsebo leschenaultii, Cope, Proc. Acad. Philad. 1862, p. 357 : Espada, 



Viqj. Pad/., Vert. p. 167. 



Crown without bony ridges ; snout short, truncated ; canthus 

 rostralis angular; loreal region vertical; interorbital space much/ 

 broader than the upper eyelid ; tympanum very distinct, vertically 

 elliptic, about two thirds the width of the eye. Tips of fingers and 

 toes swollen ; first finger extending far beyond second ; toes slightly 

 webbed at the base, with simple subartioular tubercles ; two mode- 

 rate metatarsal tubercles; a rather indistinct tarsal fold. The 



