APPENDIX. 141 



toid, entirely hidden by the skin, and rectangular to the first. Para- 

 toid elliptical, moderate. Tympanum more or less indistinct, of 

 moderate size. The first finger longer and thicker than the second ; 

 metatarsus without cutaneous fold, with two tubercles, covered by a 

 homy brown membrane ; toes haK- webbed. Above brownish or 

 greenish, olive, with many ii-regular brown spots, sometimes con- 

 fluent ; no distinct dorsal streak ; spots between the eyes irregular. 



a-d. Adult. Andes of Ecuador. From Mr. Eraser's Collection. 



Description. — This species resembles in many respects Bufo 

 lentiginosus ; the bony ridge is rounded and rather low, and com- 

 mences from the upper margin of the orbit ; it is a little divergent 

 from that of the other side, not continued above the paratoid, and 

 emits there a lateral branch which is hidden by the skin. The 

 tympanum is rather indistinct, and sometimes coloured or spotted. 

 Tongue broader than in most of the species of Bufo. The skin is 

 covered with small warts, but none of them bear spines. No large 

 gland on the leg. The first finger is the thickest, longer than the 

 second, but nearly equal in length to the third. The web between 

 the toes reaches to the tip, except in the fourth, where the outer 

 three phalanges are free ; the third rather longer than the second. 

 One specimen is entirely similar in coloration to Bufo variabilis, but 

 in the others the spots expand more, and occupy nearly each half of the 

 back ; on the sides and on the legs the spots remain more separate ; 

 the spots are also less crowded along the vertebral line, but the 

 dorsal streak is always irregular and interrupted ; the crown of the 

 head is either uniform or with more or less spots, irregidarly ar- 

 ranged. Belly nearly uniform whitish. Leng-th of the body 3|^" ; 

 length of the anterior extremity 2", of the posterior 4" ; breadth of 

 the cleft of month l-J-". 



Page 64. Bufo omatus. 



Bufo melanotis, Guichen. Rept. in Casteln. Anim. nouv. ou rares, p. 89. 



I mentioned above, as a character of this species, the tarsus pro- 

 vided with a series of small tubercles. I find, by continued exa- 

 mination, that the tarsus has a cutaneous fold along the inner edge ; 

 but generally it is crenulated, so as to give the appearance of a series 

 of tubercles ; in a few specimens, as in the following, it is entire ; 

 I find this to be the case also in specimens from the Continent of 

 Tropical America. 



^-t. Adult and half-grown. Barbadoes. Presented by Sir A. Smith. 



Page 65. Bufo agua. 

 Guichen, Rept, in Casteln. Anim. nouv. ou rares, p. 

 y'. Adult. Trinidad. Presented by Sir A. Smith. 



