OCR Text |
Show I 72 DR. J. J. KAUP ON NISI AND ASTURES. [Jan. 24, the primaries of old birds without bands and with white spots. Tail with four bands, which grow narrower with age, and disappear almost entirely on the outer and middle feathers. Tarsus and digits slender and short; the latter with rather broader soles. At present only one species is known, which is found frequently on the continent and in the Indian archipelago, viz.- TACHYSPIZA SOLOENSIS. Falco soloensis, Linn. Tr. xiii. p. 137. Fig. 2. Tachyspiza, Kaup. ERYTHROSPIZA, Kaup. Form powerful and compact. Emarginations on the inner vane of the first to fifth primaries. Point of wing equal to from four fifteenths to four thirteenths of the entire length of the wing. Beak straighter than that of Nisus. The bars on the long tail frequently disappear with age, and in young birds they are never so numerous as in Uraspiza. The species are found only in Celebes and the Moluccas, and when adult have a uniformly coloured rusty-red under-plumage. 1. ERYTHROSPIZA TRINOTATA, Temm. Falco trinotatus, Temm. Leyd. Mus. Nisus trinotatus, Schlegel, Valkv. t. 19. Astur trinotatus, Bp. Consp. i. p. 33. The smallest species. Above bluish grey; throat whitish ; below |