FROGS OF COLOMBIA — COCHRAN AND GOIN 369 



Edalorhina perezi Jiminez de la Espada 



Plate 45g-i 



1871. Edalorhina perezi Jimfnez de la Espada, p. 58 (type locality, banks of the 

 Rio Napo, Ecuador); 1875, p. 160, pi. 1, fig. 5. — Boulenger, 1882a, p. 

 227, pi. 16, fig. 2.— F. Midler, 1884, p. 281.— Trewavas, 1933, p. 424, 

 figs. 15, 16.— Myers, 1942, p. 151.— Dunn, 1949, p. 2, fig. 1.— Gorham, 

 1963, p. 16. 



Description. — USNM 146954, a young frog from Puerto Narino, 

 Amazonas, Colombia. A rough, bony ridge between the eyes, extending 

 diagonally forward toward edge of upper eyelid; vomerine teeth in 

 two very small, round, well-separated patches behind the choanae; 

 tongue three-fifths as wide as mouth opening, elongate, cordiform, its 

 posterior border free and deeply notched; snout moderate, truncate 

 at the tip when viewed from above, truncate in profile, the upper jaw 

 extending well beyond the lower. Nostrils lateral, distinctly projecting, 

 their distance from end of snout two-thirds their distance from eye. 

 Can thus rostralis rounded, marked by a series of elongate glands; 

 loreal region vertical, flat, with a furrow below where it meets the 

 upper lip. Eye large, prominent, its diameter equal to its distance 

 from tip of snout; interorbital diameter equal to that of upper eyelid, 

 a trifle less than interval between the nostrils. Tympanum distinct, 

 its greatest diameter three-fourths that of eye, separated from eye by 

 an interval equal to one-half its own diameter. Fingers without 

 terminal disks, with lateral ridges, free, first and second fingers sub- 

 equal, fourth finger longer than either, reaching to base of penultimate 

 phalanx of third; a small oval thumb pad present; a larger rounded 

 palmar callus; metacarpal tubercles well developed. Toes slightly 

 webbed at the base, long, without disks, third and fifth toes subequal, 

 their tips reaching the base of antepenultimate phalanx of fourth toe; 

 a small oval inner metatarsal tubercle, and a smaller rounded outer 

 one; a distinct tarsal ridge curving across the tarsus, beset with 

 irregular tubercles, the largest of which is on center of tarsus; a 

 distinct skinfold on heel and knee. Body fairly stout, in postaxillary 

 region equal to greatest width of head. When hind leg is adpressed, 

 heel reaches to posterior corner of eye; when limbs are laid along the 

 sides, knee and elbow touch; when hind legs are bent at right angles 

 to body, heels overlap. Skin of upper parts minutely warty, with heavy 

 warts and glands at regular intervals along back, but not in a linear 

 connected series as the dorsolateral glands; a heavy glandular ridge 

 across head, ending in a fringe of short "horns" on upper eyelid; a very 

 thick lateral fold, standing out from the body and edged with large 

 tubercles; venter smooth, a weak glandular ridge from posterior corner 



