Anterior surface of cell studded with minute acuminate papillae; posterior surface smooth, sometimes spotted.
Tail short, even, the shafts very strong, and prolonged into acuminate points.
Bill almost straight, acuminate; tail of moderate length, emarginate and rounded.
Bill rather slender; feathers of the crown and occiput elongated, of the fore part of the back much elongated and acuminate.
Pinnæ lanceolate, acuminate, the lowest pair deflexed and standing forward; cut into oblong, obtuse segments.
In the latter work it may be seen that Gov. Colden long ago described the auricles as being “also often acuminate.”
Leaves much smaller, less oblique at the base, finely and regularly crenate, acuminate rather than cuspidate.
Forty percent have acute distal ends and 60% of the distal ends are acuminate.
The distal end is usually sharply acute, but may approach an acuminate type.
Thirteen percent have acuminate distal ends and 87% have acute distal ends.