





172 



Measurements. 







Sex. 



"Wing. 



Tail. 



Culmen. 



Tarsus. 



Middle toe. 



No. of specimens. 



? 



13. 15-14. 90 

 14. 25-14. 60 



7. 90- 9. 75 

 9. 25-11. 00 



1. 00-1. 05 

 1. 05-1. 10 



3. 20-3. 40 

 3. 00-3. 50 



1. 62-1. 70 

 1. 65-1. 80 



8 

 12 



UEUBITIXGA SCHISTACEA. 



Asturina scMsiacea Sund. CEfv. Af. Vet. Forh. 1849^ 132. — Schleg. Mus. Pays-Bas, 



Asturiose, 1862, 8. 

 Morplmus schistaceus Scl. P. Z. S. 1857, 226 (S. Mexico) ; ib. 261 (Upper Amazon). 

 UruUlinga scMstacea Scl. P. Z. S. 1858, 128; Trans. Z. S. 1858, 261, pi. 58.— Scl. & 



Salv. p. Z. S. 1866, 198; 1867, 979.— Pelz. Oru. Bras. 1871, 2, o94.— Salv. 



Ibis 1872, 243.— Sharpe, Cat. B. Brit. Mus. 1874, 216. 

 Buteo schistaceus Gray, Hand List, i, 1869,9. 



Leucopternis scMstacea Salv. Ibis, 1872, 243. — ScL. & Salv. Nom. Neot. 1873, 119. 

 Falco urdesiaceiis Licht. in Mus. Berol. teste Bonap. 



Hiipliomorplimis ardeslaceus Light. Nomeucl. 1854, 1. 



Eab. — ISTorthern and Eastern South America. S. Mexico (Scl4ter, 

 1. c.) Ecuador and Bogota (Salvin) ; Brazil (Rio Madeira et Eio Negro, 

 Nattbrer); Bolivia (Sclater); Peru (U. S. Nat. Mus.)^ Para et 

 Cayenne (Schlegel). 



Wing, 9.40-11.90 ; tail, 5.80-7.80 ; culmen, 0.90-0.95 ; tarsus, 2.50-3.20 ; 

 middle toe, 1.35-1.50. Bill comparatively short and broad, the upper 

 outline of the cere decidedly ascending basally, and distinctly arched. 

 Nostril nearly circular. Remiges 24; fourth or fifth quill longest, first 

 shortest ; outer five with inner webs faintly sinuated. Adult : — Uniform 

 slaty plumbeous, darker on the head and primaries. Tail deep black 

 (the extreme base dusky), with a narrow white tip, and crossed about 

 the middle by a narrow continuous band of white, about 0.50 to 0.75 of 

 an inch wide. Tibise sometimes barred, more or less distinctly, with 

 white, and lining of the wing more irregularly variegated with the same. 



Specimens examined. — In U. S. Nat. Mas., 1 (No. 55281, ^, adult, Pebas, Peru, J. 

 Hauxwell^); Mus. Comp. Zool., Cambridge, 1 ; total, 2. 



APPENDIX. 



{Pertainincj to species proiabhj referrible to this genus, not examined by vs.) 

 1. URUBITINGA (?) PLUMBEA. 



Leucopternis plumbea Salvin, Ibis, 1872, 240, pi, -viii. — Scl. & Salv. Nom. Neotr. 1873, 

 119. 

 TJrubitinga plumbea Sharpe, Cat. Ace. Brit. Mus. 1874, 216, 



''''Adult (type of species). — Everywhere leaden-gray ; wing-coverts and 

 quills black, the latter with a single bar of white, somewhat shaded with 

 ashy across the middle ; tibial plumes indistinctly barred with white ; un- 

 der wing-coverts white; cere, orbits, and feet orange; bill and claws 

 black. Total length 14.5 inches, culmen 1.5, wing 9.8, tail 6.7, tarsus 2.5. 

 {Mus. Salvm and Qodman.) Hah. — Ecuador and Panama." — (Sharpe, 

 I. c.) 



This species is apparently closely related to TJ. scJiistacea, from which, 

 however, it differs in smaller size and white under wing-coverts. 



* " Iris yellow.''' 



