_Regulus_, CUV. “Leçons d’Anat. Comp. 1799, 1800.” (Type _Motacilla
regulus_, LINN.)
_Reguloides_, BLYTH. 1847. (Type “_R. proregulus_, PALL.” GRAY.)
_Phyllobasileus_, CAB. Mus. Hein. I, 1850, 33. (Type _Motacilla
calendula_, LINN.)—_Corthylio_, CAB. Jour. Orn. I, 1853, 83.
(Same type.)
[Line drawing: _Regulus satrapa._
28784. ♂]
GEN. CHAR. Bill slender, much shorter than the head, depressed at
base, but becoming rapidly compressed; moderately notched at tip.
Culmen straight to near the tip, then gently curved. Commissure
straight; gonys convex. Rictus well provided with bristles; nostril
covered by a single bristly feather directed forwards (not distinct in
_calendula_). Tarsi elongated, exceeding considerably the middle toe,
and without scutellæ. Lateral toes about equal; hind toe with the
claw, longer than the middle one by about half the claw. Claws all
much curved. First primary about one third as long as the longest;
second equal to fifth or sixth. Tail shorter than the wings,
moderately forked, the feathers acuminate. Colors olive-green above,
whitish beneath. Size very small.
We are unable to appreciate any such difference between the common
North American _Reguli_ as to warrant Cabanis in establishing a
separate genus for the _calendula_. The bristly feather over the
nostril is perhaps less compact and close, but it exists in a
rudimentary condition.