FALCONID.E — THE FALCONS. 129 



barred than in the other races. Youmj with narrower streaks 

 beneath. Wing, 11.15-12.60; tail, G.ll -8.00; culmen, .81- 

 .00; tarsus, l.GO-2.05; middle toe, 1.75-2.15. Hah. Aus- 

 tralia ........ var. melanogenys} 



b. Younsr unvarieojated brownish-l)lack above. Beneath brownish- 

 black, faintly streaked with white, or nearly unvariegated. Inner webs 

 of tail-feathers without transverse bars. 



Wing, 14.90 - 15.09 ; tail, 8.50 ; culmen, .95 - 1.00 ; tarsus, 



2.10; middle toe, 2.15-2.21. Hab. Northwest coast of 



North America, from Oregon to Sitka . . . var. j^ealei. 



B. Second quill longest ; first with inner web emarginated, the second with 



inner web not sinuated. Young without longitudinal stripes on lower parts. 



Adult and young stages hardly appreciably different. 



Above plumbeous or black; beneath black from the jugulum to the tibite, 

 with transverse bars of white, ochraceous, or rufous; throat and jugulum 

 white, white and rufous, or wholly ochraceous, with a semicircular outline 

 posteriorly; tibias, anal region, and crissum uniform deep rufous, or spotted 

 with black on an ochraceous or a white and rufous ground. Adult. Plum- 

 beous above, the feathers darker centrally, and with obscure darker bars 

 posteriorly ; jugulum immaculate. Young. Black above, the feathers 

 bordered terminally with rusty, or else dark plumbeous without transverse 

 bars; jugulum with longitudinal streaks. 



2. F aurantius." Wing, 9.50 - 12.00 ; tail, 5.40 - G.25 ; culmen, .90 ; 



1 Faico cnmmiinis, var. melanogenys (Gould). Falco communis, Lath. New S. Wales Dr. 

 II, No. 4. Falco pcregrinus, Vio. Linn. Trans. XV, p. 183. —1b. Jsis, 1830, 260. — Bonap. 

 Consp. 23, No. 2. Falco melanogenys, Gould, P. Z. S. pt. 5, 1837, 139. — Ib. Synop. B. Austr. 

 pt. 3, pi. xl, fig. 2; Birds of Austr. I, pl. 8; Intr. B. Austr. 19. — Gray, Gen. B. fol. sp. 6. — 

 Tb. List. B. Brit. Mus. 51. — Bonap. Rev. Zool. 1850, 484. — Kaup, Monog. Falc. in Jardhie's 

 C'oiitr. Orn. 1850, 56. — Stukt, Exp. Austr. App. 14. — Strickl. Orn. Syn. I, 1855, 84.— 

 Gray, Hand List, I, 1869, 19, No. 167. Falco macropus. Swains. An. Menag. 1838, 341. 

 Eight specimens examined, including the types of Gould's figures and descriptions in the Birds 

 of Australia. 



2 Falco cmrantius, Gmel. (Rufous-bellied Falcon). Fa.lco aurantius, Gmel. Syst. Nat. p. 

 283, 1789. —Lath. Ind. Orn. p. 48, 1790, Gen. Hist. I, 289. -Baud. Tr. Orn. \\, 130.— 

 Sha-w, Zool. VII, 194. — Steph. ZooI. XIII, ii, 40. — Cuv. Reg. An. (ed. 2), I, 322. —Less. 

 Tr. Orn. p. 91. Bonap. Consp. A v. p. 25. — Strickl. Orn. Syn. I, 89, 1855. HijjMriorchis 

 aurantius, Kaup, Ueb. Falk. Mus. Senck. p. 257, 1845. Biclcns aurantius. Spin, Av. Bras. I, 

 17,1824. Fcdco cleiroleucus, Temm. PI. Col. 348, 1836. — Less. Man. Oni. I, 79. -Gray, 

 List B. Brit. Mus. 1844, p. 25; Gen. B. fol. sp. 12. —Bonap. Rev. Zool. 1850, 486. Falco 

 rufigularis (not of Daudin !) Gray, List B. Brit. Mus. p. 54, 1844. 



Sp. Char. Adult {^, Costa Rica ; Coll. G. N. Lawrence). Above bluish -plumbeous, the 

 feathers darker centrally ; anteriorly the likuk increases in extent, first leaving the plumbeous 

 only as a border to the feathers, and then dropping it altogether, the head and nape being plain 

 Ijlack ; posteriorly the i)Iumheous predominates, and shows a tendency to form transverse bars. 

 On the head and neck the black occupies the whole ujiper and lateral portions, reaching down to 

 the throat, involving the whole of the cheeks and maxillaj, which it covers in an angular patch. 

 Primaries and tail deej) black ; the former immaculate on their outer surface ; the latter crossed 

 by six (the last terminal) incomplete very narrow bands of pure white, formed by transverse bars, 

 which touch neither the shaft nor edges of the feathers ; upper tail-coverts crossed by about two 

 bars of pure white. Immaculate area of the tliroat and jugulum deep rufous posteriorly and 

 laterally, pure white anteriorly and centrally ; from the jugulum to the tibiaj, and including the 

 entire lining of the wing, continuous black, with transverse bars of white ; tibi;e plain rufous; 

 crissum mixed rufous and white, — the former predominating, — and thickly marked with large 



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