| | | | (49.0) | (49.5) | (4.9) | | | | | | |[Female]| 6 | 44.6 |46.1-50.2|47.7-53.8| 6-10 | | | | (48.8) | (50.4) | (7.6) | | | | | | _P. schmidtorum | [Male] | 25 | 32.8 |45.3-52.4|51.5-59.3| 5-11 schmidtorum_ | | | | (48.1) | (54.7) | (6.2) | | | | | | |[Female]| 9 | 38.0 |46.5-49.1|51.3-58.3| 7-11 | | | | (47.7) | (54.9) | (8.7) | | | | | | _P. schmidtorum | [Male] | 40 | 30.5 |46.0-51.9|48.2-65.6| 4-6 chamulae_ | | | | (48.2) | (54.9) | (4.7) | | | | | | |[Female]| 4 | 31.8 |48.1-52.4|51.4-61.7| 4-9 | | | | (50.5) | (55.7) | (6.2) | | | | | | _P. ignicolor_ | [Male] | 13 | 30.5 |45.9-52.2|37.1-47.1| 3-9 | | | | (49.6) | (43.2) | (6.1) ------------------+--------+------+-------+---------+---------+------- [Illustration: FIG. 1. Palmar views of right hands of (A) _Ptychohyla spinipollex_ (KU 58054) and (B) _Ptychohyla schmidtorum schmidtorum_ (KU 58043).] Many workers have used the presence of a bifid subarticular tubercle beneath the fourth finger as a diagnostic character of certain species of hylids. Examination of the subarticular tubercles in _Ptychohyla_ reveals considerable intraspecific variation. Bifid tubercles beneath the fourth finger are found in all species except _P. ignicolor_, which is known from only two specimens. In _P. euthysanota euthysanota_ nearly 60 per cent and in _P. schmidtorum schmidtorum_ about 90 per cent of the specimens have a bifid tubercle beneath the fourth finger on one or both hands. All specimens of _P. leonhardschultzei_ have either a bifid or double tubercle beneath the fourth finger, and some have a bifid distal tubercle beneath the third finger. FEET.--Members of the _Ptychohyla euthysanota_ group have a weak tarsal fold, whereas in the species comprising the _Ptychohyla schmidtorum_ group the tarsal fold is absent. Webbing on the foot extends to the discs of the third and fifth toes and to the base of the penultimate phalanx of the fourth toe, except in _P. ignicolor_, which has less webbing.