Heels overlap when hind limbs adpressed; tibiotarsal articulation extends to anterior corner of eye; no tarsal fold; inner metatarsal tubercle large, flat, and elliptical; outer metatarsal tubercle near inner one and triangular in shape; subarticular tubercles round; length of digits from shortest to longest 1-2-5-3-4; third toe webbed to proximal end of penultimate phalanx; fourth toe webbed to distal part of antepenultimate phalanx; fifth toe webbed to middle of penultimate phalanx; discs on toes smaller than on fingers.
"A Review of the Middle American Tree Frogs of the Genus Ptychohyla"
William E. Duellman
Usually the web extends to some point on the antepenultimate phalanx of the fourth toe, but in some specimens the web extends to the base of the penultimate phalanx.
"A Review of the Frogs of the Hyla bistincta Group"
William E. Duellman
32. What is the antepenultimate syllable?
"1001 Questions and Answers on Orthography and Reading"
B. A. Hathaway