We shall take, to characterize this group, the _Argozoum_, from
_arges_, _swift_, _winged_.
Of this genus there are two species, the larger of which is the
ARGOZOUM DISPARIDIGITATUM. It is leptodactylous, and remarkable for
the length of the middle toe. We have another species, which is
smaller than the last named, and in which the toes are nearly of equal
length; hence called ARGOZOUM PARIDIGITATUM.
The other genus of this group is the PLATYPTERNA, and our specimen
is named _Deaniana_. This genus is remarkable for the width of the
heel; hence the name, from _platys_, _broad_, and _pterna_, _a heel_.
It has three toes like the other genera of this group.
* * * * *