The subspecies of P. deppei have been defined on characters of coloration and scutellation. |
Examination of 18 specimens from Costa Rica shows no differences in scutellation, nor geographic segregation of two populations. |
In scutellation these specimens are like T. dorsalis cyclides. |
Of these, Cyclagras, Hypsirhynchus, and Pseudablabes have round pupils and certain differences in scutellation. |
There are only ten tail-feathers, and the scutellation of the tarsus is like that of Xenicus. |
The scutellation of the cottonmouth closely resembles that of the other species of Agkistrodon. |