416 U.S. NATIONAL MUSEUM BULLETIN 288 



Vaupes: Alto Rfo Cuduyarf, CNHM 82009-11. 



Eleutherodactylus latidiscus latidiscus (Boulenger) 



Plate 55d-f 



1898. Hylodes latidiscus Boulenger, 1898a, p. 121, pi. 15, fig. 4 (type locality, 

 CachabS, Ecuador).— Nieden, 1923, p. 451, fig. 325. 



1933. Eleutherodactylus latidiscus. — Dunn, 1933, p. 68. — Parker, 1934c, p. 267. — 

 Breder, 1946, p. 405.— Taylor, 1952, p. 710.— Cochran, 1955, p. 222 — 

 Goin, 1959a, p. 135.— Gorham, 1963, p. 17. 



Description. — BM 98.4.28.109 (paratype), an adult from Cachabe, 

 Ecuador. No bony ridges on top of head but a heavy conical tubercle 

 between the eyes and a smaller pair between their anterior borders; 

 a distinct diamond-shaped frontoparietal depression. Vomerine teeth 

 in two very heavy, transverse, triangular, well-separated series 

 behind the choanae; tongue two-thirds as wide as mouth opening, 

 broadly ovate, its posterior border free and distinctly notched; 

 snout moderately rounded when viewed from above and in profile, 

 the upper jaw extending slightly beyond the lower. Nostrils lateral, 

 faintly projecting, their distance from end of snout one- third their 

 distance from eye. Can thus rostralis blunt but heavy; loreal region 

 concave, flaring outwards to the upper lip. Eye large, prominent, its 

 diameter four-fifths its distance from tip of snout; interorbital diame- 

 ter equal to that of upper eyelid, a little greater than interval between 

 nostrils. Tympanum small, not very distinct, its greatest diameter 

 one-fifth that of eye, separated from eye by an interval equal to 

 iy 2 times its own diameter. Fingers long, with lateral ridges, faintly 

 webbed, first finger much shorter than second, fourth longer than 

 either and reaching to base of disk of third, which is three times the 

 diameter of the tympanum; a small but projecting oval thumb pad 

 present; a flat, bifid palmar callus; metacarpal tubercles well de- 

 veloped. Toes long, slightly webbed, third toe shorter than fifth, 

 the disk of which reaches to base of antepenultimate phalanx of 

 fourth; disk of fourth toe nearly three times the diameter of tympanum 

 and almost as large as disk of third finger; a small but prominent 

 inner metatarsal tubercle; outer metatarsal tubercle absent, or in- 

 dicated only by a small wart; a short distinct tarsal ridge, ending 

 one- third the way to heel; a heavy skinfold on heel beset with a 

 few short tubercles; a heavy skinfold on knee. Body rather stout, in 

 postaxillary region less than greatest width of head. When hind leg 

 is adpressed, heel reaches to a point just beyond anterior 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 touch. Skin 

 of upper parts rough, especially above shoulders and on sacrum; 

 snout tubercular; several conical warts on upper eyelid and a very 



