FROGS OF SOUTHEASTERN BRAZIL — COCHRAN 175 



upper jaw scarcely extending beyond the lower; nostrils superolateral, 

 slightly projecting, their distance from end of snout about one-third 

 that to eye, separated from each other by an interval equal to their 

 distance from eye. Canthus rostralis very poorly defined, loreal 

 region slightly concave, sloping greatly. Eye very large, prominent, 

 its diameter equal to its distance from end of snout; interorbital 

 diameter equal to that of upper eyelid, also equal to distance between 

 nostrils. Tympanum very distinct, medium-sized, about one-half 

 the diameter of the eye, separated from eye by an interval equal to 

 one-third its own diameter. Fingers one-half webbed, fourth longer 

 than second, reachiug to base of disk of third which covers the tympanic 

 area; no projecting rudiment of a poll ex but a semicircular disk at base 

 of first finger; toes three-fourths webbed, third and fifth subequal, 

 disk of fourth nearly covering the tympanic area; a small distinct 

 inner but no outer metatarsal tubercle; a very narrow tarsal ridge 

 along the inside of tarsus and a heavy serrate glandular fold along 

 outside of tarsus and foot, with a similar smaller one along outside of 

 forearm; a dermal fold across heel ending in a tubercle, but no true 

 dermal appendage; body only moderately elongate, rather heavy in 

 build, in postaxillary region almost equal to greatest width of head: 

 when hind leg is adpressed, heel reaches to tip of snout; when limbs 

 are laid along the sides, knee and elbow slightly overlap; when hind 

 legs are bent at right angles to body, heels overlap considerably. 

 Skin of upper parts highly glandular, with large pustules which are 

 especially prominent between the eyes and on the occiput and form a 

 glandular ridge on each side of the back behind the axilla; a narrow 

 but distinct glandular ridge encu'cling the upper part of tympanum 

 and ending in front of shoulder; skin of chin faintly granular, that of 

 throat and chest smooth, that of belly finely granular, with similar 

 granules on posterior part of femur below anus; lower surface of femur 

 nearly smooth. A skinfold across chest. A pair of lateral external 

 vocal sacs. 



Dimensions. — Head and body 33.5 mm.; head length 10.5 mm., 

 width 11 mm.; femm- 15 mm.; tibia 17 mm.; foot 14 mm.; hand 10 mm. 



Mathematical analysis (in percentages of the total length): 



