As already stated on page 177, there is little to distinguish the
_Cærebidæ_ from the _Sylvicolidæ_, except by the longer and more
protracted tongue, and by the narrower gape in some of the forms. The
genera _Certhiola_, _Cæreba_, _Diglossa_, etc., have peculiarities by
which they are easily recognized; but when we come to such members as
_Dacnis_, _Conirostrum_, etc., it becomes very difficult to separate
them from the slender-billed Tanagers, the Wood Warblers, and the
_Helminthophagas_.
Although the family is one widely distributed, in numerous genera,
over Middle and South America, but one, _Certhiola_, belongs to North
America, this being represented by a species, or rather a race,
abundant in the Bahamas, and occasionally met with in the Florida
Keys. We shall therefore give only the diagnosis of this family.