Plate XO. 



ASTURINA PLAGIATA. 



(LICHTENSTEm'S BUZZARD-HAWI). 



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Falco plagiatus . , . Licht. in Mus. Berol. 



Aslurina plagiata . . . Schlegel, Mus. d. If. B., Asfurina,Tp. 1, 



Scl. et Salv. P.Z.S. 1SG9, p. 130. 

 Asturina nitida . . . Cassin, in Baird's Birds of N. A. p. 35. 



Scl. P.Z.S. 1857, pp. 201, 227 ; 1859, pp. 368, 389 : 1864, p. 178. 



Sc l. et Salv. Ibis, 1 8j9 , p. 217.j J^Ivin, Ibis, 1861, p. 68. 

 'Tawr. Ann. IN". S.Xyc. is. p. 133." 



Supra cinerea : subtus dilutior, fasciis angustis albis omnino, nisi in gutture, transvittata ; crisso et teetricibus 

 Cauda; superioribus albis: teetricibus alarum inferioribus et remigum pogoniis internis albis, fasciis quibusdam cinereis: 

 Cauda nigra, albo trivittata et aJguste teraiinata : rostro nigro, cers^ et pedibus flavis : long, tota lA'S, alae 9'4, caudte 

 6'0, tarsi 28. Fem. Mari similis, sed major; long. tot. 17, alsB 105, caudse 6'8, tarsi 3'0. Junior. Supra,' nigricajlti- 

 brunnea, fulvo paululmJl mixta ; subtus alba, nigricav/ti-fusco guttata ; tibiis hoc colore frequentvl transfasciatis : cauda 

 supra fumido-fusca ; subtus cinerea, nigro frequentJf transfasciata. 



Hah. in Mexico, Guatemala, et Costa Eica. 



Although, as will be seen from our list of synonyms, numerous specimens of this Hawk 

 have from time to time passed through our hands, we have, until recently, failed to distinguish 

 it from its southern representative. Nor have the American naturalists, who have met with 

 this species upon the southern confines of the great Eepublic been more discrimuiating, as they 

 also have associated it with the well-known Asturina nitida. The two species are, nevertheless, 

 separated by very conspicuous characters, as is amply shewn by the series -of specimens ctf(ntained 

 in the collection of Salvin and Godman/ which a#e now before us. 



In the adult of the present bird/ the whole upper surface is unifomi dark cinereous, without 

 any traces of cross-bars externally, except some faint markings upon the lesser wing-coverts. 

 In A. nitida.^ on the contrary, the whole upper surface is regularly crossed with transverse bars, 

 which are narrower and more frequent upon the upper part of the head and neck. The lower 

 surfaces of thfe two allies are very similar, except that the throat in the northern bird is cinereous/ 

 ihstea^dof b^ing of a pure white. The lower white tail-band in A. -plagiata is likewise naiTOwer 

 than in A. nitida. In coinparing the immature birds of the two species/ certain differences are 

 also appat'eiit. In the first plumage of the present bii'd the thighs are distinctly crossed with 

 numerous br6wnish-black bands upon a white ground, while in A. nitidal these parts are rufous, 

 more or Ifiss ititehse,, but without any traces of these markings. 



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