Family PERISTERIDÆ.
Tarsus slender and unfeathered; bill slender and weak, gape small, nostril covering swollen; tail slightly graduated; colors plain or brilliant; size moderate.
Subfamilies.
- a1. Plumage mostly brown, gray, and
vinous; very little if any metallic color.
- b1. First primary not greatly attenuated; no narrow cross-bars on neck and back; tail square or slightly graduated. Turturinæ (p. [54])
- b2. First primary abruptly attenuated; neck and back barred with narrow lines; tail graduated, longest rectrix exceeding shortest by more than twice the tarsus. Geopeliinæ (p. [57])
- a2. Plumage largely metallic green or
purple.
- b1. Feathers of hind neck not elongated; tail not white.
- b2. Feathers of neck long, narrow, and soft; tail pure white. Calœnadinæ (p. [64])
Subfamily TURTURINÆ.
Genera.
- a1. Feathers of neck normal, not bifurcated; wing-coverts without shaft-stripes.
- a2. Feathers of neck bifurcated; wing-coverts with dark shaft-stripes; edge of wing pale pearl-gray. Spilopelia (p. [56])
Genus STREPTOPELIA Bonaparte, 1854.
This genus is characterized by having a long, nearly square tail, but the outermost rectrix on each side is about 10 mm. shorter than the next feather.