| 0.0 | 100
| | (27.0) | |
| | | |
Honduras | 34 | 20.6-27.0 | 3.3 | 100
| | (24.9) | |
| | | |
Nicaragua | 67 | 21.5-26.8 | 3.0 | 92.7
| | (24.9) | |
| | | |
Costa Rica | 54 | 20.7-26.6 | 5.5 | 98.1
| | (24.2) | |
| | | |
Total | 360 | 20.7-29.0 | 5.4 | 98.3
Non-Panamanian | | (25.9) | |
| | | |
Panama | 72 | 21.7-26.0 | 94.5 | 0.0
| | (23.6) | |

Only a narrow connection exists between the posterior, pointed arm of
the squamosal and the lateral edge of the prooetic. The crista parotica
is visible dorsally along the lateral edge of the bony prooetic. The
squamosal is narrow anteriorly and posteriorly.

The prevomers are short and separated anteriorly by partly ossified
cartilage of the overlying solum nasi. The prevomer is joined to the
premaxillary by cartilage. The posterior margin of the prevomer
articulates directly with the sphenethmoid. The anterolateral and
posterolateral processes of the prevomers form the incomplete bony
internal margin of the choanae. Each prevomer bears three to six teeth.
The palatine is absent. The anterior part of the parasphenoid is narrow
and ends in a point. The pterygoid is slender and weakly developed.

_Natural History._--Throughout its range _Hyla staufferi_ occurs in
subhumid forests and savannas; consequently, the breeding activities
are limited by the seasonal occurrence of rainfall, which accumulates
in temporary ponds where this species breeds. Clasping pairs and gravid
females have been found mostly from June to August throughout its
range. This species was observed calling at Finca Taboga, Guanacaste
Province, Costa Rica, in mid-July. The males were calling from
temporary grassy and weedy ponds in which _Hyla microcephala_ also was
calling, but the two species had different calling sites. _Hyla
staufferi_ called at stations at heights of five to 80 cm. near the