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Show 107 rafoQS on the tibiae; crissum immaculate, but all other parts marked with brown, the bieast, side, and abdomen having lanceolate streaks of clear dark brown, and the tibiae having large trausverse spots of lighter brown, mixed with rnfons; throat with a medial series of narrow dtfsky streaks. Wing, 8.30; tail, 8.00; culmen, 0.52; tarsus, 2.45; middle toe, 1.40. Adult female ( No. 32,974, Nat. Mus.):- Exactly like the male. Wing, 9.85; tail 8.80; culmen, 0.60; tarsus, 2.80; middle toe, 1.70. The sexes differ in measurements as follows:- Males: Wing, 8.25- 8.30; tail, 7.65- S. 00; culmen, 0.50- 0.53; tarsus, 2.25- 2.45; middle toe, 1.40. Females: Wing, 8.60- 9.85; tail, S. 50- 8.80; culmen, 0.60- 0.62; tarsus, 2.65- 2.80; middle toe, 1.70. List of specimens in Cnited States National Museum. s *+ » m.... 488S7 16 Locality. When col-leeted. Chile .... do Chile, Valdivia. Jane -, 1864 From whom received.' Verreaux . . do Nat. Mus. Chile. NISUS BICOLOR. Sparvius hicolor VIEULL. N. D. x. 1817, 325 j Enc. Me* th. iii, 1823, 1265.- PLCHER. R. Z. 1850, 92.' Cooperastur bicolor BONAP. Rev. et Mag. Z* ol. 1854, 538. Accipiter hicolor STRICKL. Orn. Syn. i, 1855, 110.- SCL. & SALV. P. Z. S. 1869, 252 ( Maruria, Veneznela); Ex. Orn. ix, 1869, 137, pi. lxix; ib. xi, 170; P. Z. S. 1870, 838 ( coast of Honduras); P. Z. 8. 1870, 787 ( Veneznela); Norn. Neotr. 1873,120.- GRAY, Hand List, if 1869, 33.- SALVIN, P. Z. S. 1870, p. - ( Veragua). - SHARPS, Cat. Ace. B. M. 1874,154. 2fisu » bicolor GIEBEL, Thes. Orn. 1872, 2H3. Nisus pileatus var. bicolor RIDGW. Pr. Boston Soc. N. H. May, 1873, 89. Xistu tariatus LESS. Tr. 1831, 61.- PUCHER. R. Z. 1850, 6, 210. Accipiter serfasciatue SWAINS. An. Menag. 1837, 282. Xisus sexfasciatus CABAN. Schomb. Reis. Gnian. iii, 1848, 736. Astur scx/ anciatus LICHT. Nomencl. A v. 1854, 4. Micrattur dynastes VERREAUX, in Bonap. Notes Orn. 1854, 4.] Rkynchomegus dynastes BONAP. Notes Orn. 1854, 4. Accipiter erythrocnemis SCL. P. Z. S. 1860,96 ( not of Gray, 1848). Accipiter pileatus SALVIN, Ibis, 1861, 354 ( S. Mexico and Guatemala); ib. 1869, p. - ( Costa Rica).- LAWRENCE, Ann. N. Y. Lye. 1868,134 ( Costa Rica). Hab.- Central District of Tropical America, from Southern Mexico to Ecuador and Gniana. Nicaragua, Costa Rica, and Surinam ( Phila. Acad); Costa Rica, Veragua, and Panama ( Nat. Mus.); Cayenne ( Boston Soc.). Wing, 8.00- 10.00; tail, 7.20- 8.80; culmen, 0.55- 0.75; tarsus, 2.25- 2.70; middle toe, 1.45- 1.80. Fourth and fifth quills longest; first shortest; outer five with inner webs emarginated. Tail slightly rounded. Adult:- Pileum, plumbeous- black. TibisB bright cinnamon- rufous; lining of the wing white, usually mixed with grayish, or with darker shaft- streaks, and sometimes tinged with rufous along the outer border of the wing. Crissum white, sometimes tinged with grayish or rufous. Tail black, crossed by three to four narrow bands of dull plumbeous or slate, these indistinct on the npper surface, whitish underneath. Inner |