378 U.S. NATIONAL MUSEUM BULLETIN 2 88 



Color in alcohol. — Dorsum prune purple; upper limb surfaces dark 

 olive, with three black bars on legs; side of body seal brown to sepia 

 with a few small black spots in groin; venter buff, the posterior part 

 of belly nearly immaculate, the sides, chest, and throat with many 

 small sepia spots; side of head black, with a few lighter brown squarish 

 spots along upper lip; edges of lower jaw sepia, with five or six small 

 buff spots along margin; tip of snout buff; posterior femur dark olive 

 with a fine dark and light reticulation; soles of feet and palms of 

 hands dull seal brown, the tubercles and disks olive-gray; a dark 

 postanal triangle present. 



Remarks. — In the series of specimens of Eleutherodactylus conspic- 

 illatus at hand from Bolivia, Peru, and Ecuador, as well as from 

 Colombia, the critical measurements show relatively little variation. 



While conspicillatus, ranijormis, and longirostris are very similar in 

 form and color, a few minor differences serve to distinguish them in 

 the examples at hand. 



Considering the critical measurements, the head length of conspic- 

 illatus (65 specimens) is on the average proportionately shorter than 

 that of ranijormis (74 specimens), while it overlaps with that of 

 longirostris (52 specimens). The head width is not significantly 

 diiferent in the three species. The femur is shorter in conspicillatus 

 than in the other two species, although the difference is not very great. 

 The tibia of conspicillatus is shorter than that of ranijormis but barely 

 overlaps with that of longirostris. The foot measurements of all three 

 species overlap, although those of conspicillatus tend to be shorter. 

 The hand measurements also overlap, but those of longirostris are 

 slightly shorter. Thus, the body proportions are not of much assistance 

 in separating these three forms. 



The degree of webbing on the toes is a fairly effective way of 

 distinguishing conspicillatus, as the toes are slightly to about one- 

 eighth webbed in some 90 percent of the examples and up to one- 

 fourth webbed in only about 10 percent. None of the specimens of 

 longirostris examined has the toes less than one-fourth webbed, while 

 most have them one-third webbed. E. ranijormis has the toes one- 

 fourth to one-half webbed. In all three forms the adpressed heel 

 reaches usually far beyond the snout tip, but sometimes only to the 

 nostril. A pointed tubercle often occurs on the heel in conspicillatus, 

 although it is sometimes represented only a by glandular ridge. 



The form here called conspicillatus has the belly immaculate 

 posteriorly, with some fine dark dots along the sides and on chest, 

 while the chin has irregular dark spots. Its throat is often brown- 

 spotted, while a row of 10 or 12 large dark squarish spots occurs along 

 the edge of the lower jaw. E. longirostris usually has an immaculate 

 belly, although there are often scattered dark dots on the anterior 



