FROGS OF SOUTHEASTERN BRAZIL — COCHRAN 



37 



on palm; subarticular tubercles of fingei-s small, except those of the 

 basal phalanx, which are very large; toes half webbed, fringed to the 

 tips which are not dilated, third toe longer than fifth and reaching 

 halfway on antepenultimate phalanx of fourth; a prominent small 

 hemispherical inner and a flat oval outer metatarsal tubercle; sub- 

 articular tubercles of distal toe joints double, those of basal phalanx 

 single and slightly enlarged ; a distinct sharp inner tarsal ridge fading 

 out before the heel is reached. Body stout, in postaxillary region 



Figure 3.—Bufo rufus, USNM 97236: a, Dorsum X J^; b, profile X M; c, foot X 1; 



d, hand X 1. 



nearly 1% times the greatest width of head; when hind leg is adpressed, 

 heel reaches to axilla; when limbs are laid along the sides, knee and 

 elbow are widely separated; when hind legs are bent at right angles 

 to body, heels barely touch. Skin of dorsum with numerous large, 

 very blunt warts mingled with smaller ones; a few small spinules on 

 the supraocular ridges and on the warts of the tibia and tarsus; the 

 parotoids deeply pitted; ventral surface coarsely and irregularly 

 granulate, heavily so beneath the chin, very finely so on lower foot 

 and tibia. No skinfold across the chest. (An external vocal sac 

 in the male.) 



