=+=============
| | Snout- | Tibia | Foot | Tympanum/
SEX | N | vent | length/ | length/ | eye
| | length | S-V L | S-V L |
---------+---+-------------+-------------+-------------+-------------
Males | 5 | 68.8-75.1 | 52.6-55.8 | 28.1-30.0 | 41.4-55.2
| | (70.7) | (53.7) | (29.2) | (50.6)
| | | | |
Females | 2 | 69.4-75.3 | 55.8-56.2 | 28.8-31.1 | 53.3-63.0
| | (72.4) | (56.0) | (29.9) | (58.8)
---------+---+-------------+-------------+-------------+-------------

The number of transverse bars on each thigh and shank varies from five
to eight. The white stripe above the anus and the stripe from the snout
along the side of the head are invariably present. In some of the
largest individuals the brown reticulations on the anterior surface of
the thigh extend onto the ventral surface; in these specimens brown
flecks are present on the ventral surfaces on the shanks.

The tympanum is proportionately larger in females than in males; the
variation in size and proportions is given in Table 2. The total number
of prevomerine teeth varies from 13 to 18 (mean, 15) in five adult males
and from 10 to 12 (mean 11) in two females.

The testes in all adult males are granular, ovoid in shape, and greatly
enlarged. The lengths of the left testis in each of the five males are
11.0 to 23.5 (mean 14.6) mm.

_Comparisons._--On the basis of external appearance and certain cranial
characters (large frontoparietal fontanelle, broad sphenethmoid, large
nasals broadly separated medially having thin lateral processes
articulating with the palatines, short squamosal not articulating with
the maxillary, and quadratojugal present and articulating with the
maxillary), _Hyla altipotens_ can be associated with the _Hyla
taeniopus_ group (Duellman, 1965, Lynch and Smith, 1966). _Hyla
altipotens_ can be distinguished from all of the other members of the
group by its narrow head, pointed snout in both sexes, and uniformly
yellow throat and belly.

Small brown individuals of _Hyla altipotens_ superficially resemble
adult _Hyla pinorum_. The latter species has a covered tympanum, less
webbing on the hands, and a short, blunt snout.

_Remarks._--This stream-breeding frog is like _Hyla taeniopus_ in having
greatly enlarged testes, which possibly through