2IO Ridgwav on a Tropical American Hawk. 



access to larger series of specimens than I have been able to 

 examine, may have seen intermediate specimens (though I am 

 not aware that either of these gentlemen have so stated in their 

 writings) I yield to the opinion of such high authority, though, 

 for the sake of convenience, and in view of possible future devel- 

 opments, have arranged separately the synonymy and description 

 of the two forms. 



440.* — Buteo brachyurus.* 



SlIORT-TAILEn BlZZARD. 



Xormal phase. 



Buteo braekyurus Vieill. N. D. iv, 1816, 477 ( = $adult). Gray, Gen. 

 B. i. 1S49. 12. — Pucher. Rev. et Mag. Zo-1. 1S50, 86. — Bonap. ib. 

 481. — Ridgw. Pr. Boston Soc. May, 1S73. 67 (Brazil). 

 Buteola brac/ivura Bonap. Rev. et Mag. Zool. 1850. 489. — Scl. and 

 Salv. P.Z.S. 1869. 130 ; Nom. Neotr. 1873, 118 (Guatemala to Bra- 

 zil 1. — Taczan. P.Z.S. 1874, 552 (Central Peru). — Sharpe. Cat. 

 B. Brit. Mus. i. 1874. 20if (Veragua to Amazonia and Peru). — 

 Gurney, Ibis. 1S75. 477-S0 (part). 

 Asturina brachyura Bonap. Rev. et Mag. Zool. 1S50, 489. — Stricki.. 



Orn. Syn. i. 1855. 42. 

 Astur braekyura Gray, Hand-list. i. 1869. 30. 

 Falco albifrons Max. Beitr. iii. 1830. 187 (= adult). 

 Asturina albifrons Kaup, Isis, 1847, 200; Jardine's Contr. Orn. 1850, 



67. — Bonap. Consp. i. 1S50, 31. 

 Butro albifrons Schleg. Mus. P.-B. Buteones, 1S62. 10: Rev. Ace. 

 1S73, 109. — Ridgw. Pr. Phil. Acad. Dec. 1870. 142. 

 (?) ■• As/it rina diai/rina Kaup, Rev. et Mag. Zool. 1850, p. 489." 



( Sharpe ?) 

 Buteo minutus Pelz. Sitz. Ak. Wien, xliv, 1862, 14 (= young) ; Verb. 

 z.-b. Wien, 1862, 141; Reis. Novara. Vog. 1S65, 16; Orn. Bras. 1871, 



3> 39 6 - 



B*uteola minuta Giebel, Thes. Orn. i. 1875, 517. 



Hab. Tropical America in general, from Brazil and -Peru to Eastern 

 Mexico (Mirador) and Eastern Florida (Palatka). 



Sp. Ch. — Size small (total length not more than 16 inches); wings 

 proportionately long, reaching when closed nearly or quite to the end of 

 the tail. 3rd or 4th quill longest, 1st about equal to or a little longer than 

 the 10th ; four outer quills with their inner webs distinctly emarginated. 

 Tarsal scutelhe S-9. Wing, 11.25-12.70; extent of primaries beyond 

 longest tertials, 2.70-3.30; tail, 7.00-7.20; culmen, .75; tarsus, 2.05-2.50; 

 middle toe, 1. 35-1. 80. 



* The number (440*) prefixed to the name is that which the species should bear in 

 the new catalogue of North American Birds, 

 t Excl. syn. " Buteo melanoleucus Less " and " Astur poliogaster Gray " ! 



