2 10 
Ridgway oit 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 brachynrus.* 
Short-tailed Buzzard. 
Normal phase. 
Buteo brachyurus Vieill. N. D. iv, 1816, 477 (=$ adult). Gray, Gen. 
B. i. 1849. 12 — Pucher. Rev. et Mag. Zocl. 1850, 86.— Bonap. ib. 
481. — Ridgw. Pr. Boston Soc. May, 1873. 67 (Brazil). 
Buteola brachyura Bonap. Rev. et Mag. Zool. 1850, 489. — Scl. and 
Salv. P.Z.S. 1869, 130 ; Norn. Neotr. 1873, 118 (Guatemala to Bra- 
zil). — Taczan. P.Z.S. 1874, 552 (Central Peru).— Sharpe, Cat. 
B. Brit. Mus. i. 1874, 201 f (Veragua to Amazonia and Peru). — 
Gurney, Ibis, 1875, 477-80 (part). 
Asturina brachyura Bonap. Rev. et Mag. Zool. 1850, 489. — Strickl. 
Orn. Syn. i. 1855, 42. 
Astur brachyura 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. 1850, 31. 
Buteo albifrons Schleg. Mus. P.-B. Buteones, 1862, 10; Rev. Acc. 
1873, 109.— Ridgw. Pr. Phil. Acad. Dec. 1870, 142. 
(?) “ Asturina diadema Kaup, Rev. et Mag. Zool. 1850, p. 489.” 
(Sharpe ?) 
Buteo minutus Pelz. Sitz. Ak. Wien, xliv, 1862, 14 (= joung) ; Verh. 
z.-b. Wien, 1862, 141 ; Reis. Novara, Vog. 1865, 16; Orn. Bras. 1871, 
3 i 396 - 
Buteola 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 scutellas 8-9. 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, 
f Excl. syn. “ Buteo melanoleucus Less ” and “ Astur poliogaster Gray ” ! 
