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Show 172 Measurements Sex. 6 9 Wing. 13.15- 14.90 14.25- 14.60 TaiL 7.90- 9.75 9.25- 11.00 Cnlmen. 1.00- 1.05 1.05- 1.10 Tarsus. 3.20- 3.40 3.00- 3.50 Kiddle toe. 1.62- L70 1.65- 1.80 No. of specimens. 8 12 URUBITINGA SOHISTACEA. Aslurina schistacea SUND. ( Efv. Af. Yet. Furh. 1819, 132.- SCHLEG. Mus. Pays- Bu, Asturinro, 1862, 8. Morphnus schistaceus SCL. P. Z. S. 1857, 226 ( S. Mexico); t&.' 261 ( Upper Amazon). Urubitinga schistacea SCL. P. Z. S. 1858, 128; Trans. Z. 8. 1858, 261, pi. 58.- SCL. & SALV. P. Z. 8. 1866, 198; 1867, 979.- PKLZ. Orn. Bras. 1871, 2, 394.- 8ALV. Ibis 1872, 243.- SHARPS, Cat. B. Brit. Mus. 1874,216. Buteo 8chistaceu8 GRAY, Hand List, i, 1869,9. Leucopternis schistacea SALV. Ibis, 1872, 243.- SCL. & SALV. Nom. Neot. 1873,119. Falco ardesiaeeus LICHT. in Mus. Berol. teste BONAP. Hyphomorphnus ardesiaceus LICHT. Nomencl. 1854,1. Hab>- Northern and Eastern South America. 8. Mexico ( SCLATER, 1. c.) Ecuador and Bogota ( SALVIN) ; Brazil ( Rio Madeira et Rio Negro, BATTERER); Bolivia ( SCLATER); Pern ( U. 8. NAT. MUS.); Para et Cayenne ( SCHLEGEL). Wing, 9.40- 11.90; tail, 5.80- 7.80; cnlmen, 0.90- 0.95; tarsus, 2.50- 3.20; middle toe, 1.35- 1.50. Bill comparatively short and broad, the upper outline of the cere decidedly ascending basally, and distinctly arched. Nostril nearly circular. Remiges 24; fourth or fifth quill longest, first shortest; outer five with inner webs faintly sinuated. Adult:- Uniform slaty plumbeous, darker on the head and primaries. Tail deep black ( the extreme base dusky), with a narrow white tip, and crossed about the middle by a narrow continuous band of white, about 0.50 to 0.75 of an inch wide. Tibiae sometimes barred, more or less distinctly, with white, and lining of the wiug more irregularly variegated with the same. Specimens examined.- In U. S. Nat. Mus., 1 ( No. 55281, <?, ad alt, Peb& s, Peru, J. Hauxwell *); Mas. Coin p. Zoo!., Cambridge, 1; total, 2. APPENDIX. ( Pertaining to species probably referribU to this genus, not examined by vs.) 1. URUBITINGA (!) PLUMBE A. Leucopternis plumbea SALVIN, Ibis, 1872, 240, pi. viii.- SCL. & SALV. Nom. Neotr. 1873, 119. Urubitinga plumbea SHARPS, Cat. Ace. Brit. Mas. 1874,216. " Adult ( type of species).- Everywhere leaden- gray; wing- coverts and quills black, the latter with a single bar of white, somewhat shaded with ashy across the middle; tibial plumes indistinctly barred with white; under wing- coverts white; cere, orbits, and'feet orange; bill and claws black. Total length 14.5 inches, culmen 1.5, wing 9.8, tail 6.7, tarsus 2.5. ( Mus. Salvin and Oodman.) Eab.- Ecuador and Panama."-( SHAEPE, l. c.) This specfes is apparently closely related to U. schistacea, from which, however, it differs in smaller size and white under wing- coverts. * " Iris yellow," |