Muscicapa tessacourbe Scopoli and M. luzoniensis Gmelin were both based upon Sonnerat’s plate. The species was unrecognized until Platen collected a male in Mindanao. Blasius described this specimen under the name Micropus nehrkorni, suggesting the probability that it was the same as Muscicapa luzoniensis. Sonnerat’s figure does not look much like a Penthornis.

Family SITTIDÆ.

Bill slender and pointed, about as long as head; neither notched nor toothed; culmen but very slightly curved; nostrils oval, nearly hidden by the antrorse frontal plumes; shafts of the latter hair-like and extending beyond the nostrils; rictal bristles very small; wing long, pointed and somewhat curved; first primary equal to about one-third of second; fourth and fifth nearly equal and longest; second between fifth and sixth in length; tail square, very short, scarcely more than one-half the wing; tarsus distinctly scutellate, equal to culmen from base; three anterior toes with their basal joints united; outer toe much longer than inner toe; hind toe with claw much longer than tarsus and nearly equal to middle toe with claw.

Genus CALLISITTA Bonaparte, 1850.

Upper parts of body blue, forehead black; under parts, buff or cinnamon, more or less washed with lilac.

Species.
599. CALLISITTA PALAWANA (Hartert).
PALAWAN NUTHATCH.