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Show 28 ZOOLOGY OF THE VOYAGE OF THE BEAGLE. trnn verse bars. Umler su•face.-Chin almost white ; throat and breast v~ry pal ochre yellow, with narrow brown lines on the shaft of the feathers, w~1ch e.·pand into large marks on the sides of the upper pa~t of th~ breas~, and mto re_ular pots on tho e of the belly. Lining of wmg wh1te, w1th br?wn po on the feathers near their tips, like on those of the belly. . Th1~hs ,. rr pale ochre yellow, with transverse bars of pale brown, appeanng h~e inyerted wed«e-formed marks, with the apex on the shafts. nder tallcover almo~t white; under side of tail pale gray, with darker gray bars on th inner ~ide of shafts. Bill blueish black, with base of lower mandible and part of upper yellowish. Tarsi pale yellow. FoR .- ourth primary yery little longer than either the third or fifth, which are equal. First nearly equal to the eighth. Extremity of wing when folded reachiu(l" within two inche and a half of the end of the tail. Tarsi Middle toe from joint to tip of claw • From extremity of beak to within nostril Habitat anta ruz, Lat. 50° S. Patagonia, (April.) • lr. Gould remark that "thi specie has all the characters of a true Buteo, and ·ill rank as one of the fine of this well defined group. In size it rather ~ the mwon Buzzard of Europe, hich in its general style of colouring it ~ embl .·· n-F.BI.-FALCO .. -INA, V10. F.tLco FE ORALI • Temt . onlis. r,,,. . Pl. :ol. l~l lll3le · '31ld 34.3 adult oale. BIRDS. 29 TINNUNCULUS SPARVERIUS. Vieill. Falco sparverius, Linn. et A uct. I obtained specimens both from North and South Patagonia (Rio Negro and Santa Cruz), and Captain King found it at Port Famine in Tierra del Fuego. I saw it at Lima in Peru; and Mr. Macleay (Zoological Journal, vol. iii.) sent specimens from Cuba. According to Wilson it is common in the United States, and Richardson says its northern range is about 54°. The Tinmmculus therefore, ranges throughout both Americas over more than 107 degrees of latitude, or 6420 geographical miles. It is the only bird, which I saw in South America, that hovered over one particular spot, in the same stationary manner, as the common English kestrel (Falco tinnunculus, Linn.) is so frequently observed to do. Sun-FAM.-CIRCIN lE • I. Cmcus M EGASPILUS. Gould. Circus megaspilus, Gould, in Proceedings of the Zoological Society, Part V. 1837, p. 10. C. vertice cmpm·eque supm intense fuscis, linea straminea a naribus supra oculos ad occiput tendente; /we rufescenti-fusco; primariis intense fuscis ad basi1t cinereis, lineis nigris cancellatis; caudce tect1·icibus albis; rect1·icibus intermediis cinereis, externis cine1·eo-stntmineis, omnibus lineis latis fu,scis transversim notatis, linea ultima latissima, apice sordide stmmineo; gula pectm·eque stramineis, fusco variegatis ; corpm·e subtus stmmineo ; plumis pectoris laterumque st1·ia centmli fused notatis i 1"0Stro nigro; cera tarsisquejlavis. Long. tot. 22 unc. ; rostri, 1~; alaJ, 17; caudaJ, 10~; ta1·s-i, 3!. CoLoun.-Head, back of throat, whole back, and wing-coverts umber brown, of a nearly uniform tint, and not very dark. Front, over the nostrils, with few fulvous bristly feathers; over the eyes, extending backward, a pale almost pure white streak, which joins an irregular band, extending across the nape of the neck, from below ear to ear, of brown feathers, edged with pale fulvous, giving a streaked appearance to that part. The wing-coverts are just tipped with dirty white. Wings: pl'imaries of the same brown as the back, the inner ones assuming a gray tinge ; these, and the basal parts of the inner webs of al1, are obscurely oarred; secondaries and tertiaries of a paler brown than the interscapular region. Tail grayish brown, with five well-defined bars, |