NATURAL SCIENCES OF PHILADELPHIA. 



485 



2. MlCRASTUR MIRANDOLLII. 



Astur Mirandollei, Schleg., Mus. Pays-Bas, Astures, 1862, 27 ; Ned. 

 Tijdschr. I, 1863, 130. 



Mierastur Mirandollei, Scl. and Salv., Proc. Zool. Soc. Lond. 1867, 

 759 ; lb. 1869, 395 ; Norn. Av. Neotr. 1873, 120. Gray, Hand List, 

 I, 31, No. 391. Pclz., Orn. Bras. IV, 398. Ridgw., Pr. Boston Soc. 

 N. II., May, 1873, 77. Sharpe, Cat. Ace. B. M. 1874, 76. 



" Mierastur macrorhynchus Natt." Pelz., Orn. Novara, 1865, 11; Orn. 

 Bras., 1871, 7. 



Hob. Intertropical Region, north to Costa Rica (Nat. Museum), 

 south to Amazonia. 



Sp. Char. Wing, 8.80-9.30; tail, 7.80-9.00; culmen, .80-.85 ; 

 tarsus, 2.80-3.15; middle toe, 1.30-1.50. Fifth quill longest; 

 first shortest. 



Adult: Above continuous, uniform plumbeous; tail blackish, 

 narrowly tipped with white, and crossed by three narrow bands 

 of white, each inclosing a dusky mottling or of uniform pale 

 grayish-brown. Lower parts, including the lining of the wing 

 and sometimes the maxillae, continuous white, usually with the 

 shafts of some of the feathers black ; the breast sometimes with 

 transverse crescentic spots of pale grayish. 



Young (67,862, Nat. Mus., Costa Rica; Prof. Wm. M. Gabb) : 

 Similar to the adult, but above dark-slate, with a slight sepia cast, 

 below creamy-white, all the feathers bordered with dull brownish- 

 gray and with shaft-streaks of darker, these markings heavy on 

 the jugulum and breast, narrower and fainter posteriorly. Tail 

 as in the adult. Bill bright-yellow, the base of the culmen horn- 

 eolor; cere and orbits duller yellow; tarsi and toes bright yellow ; 

 claws deep black, "iris olive." Wing, 8.80; tail, 8.70; culmen, .80 ; 

 tarsus, 3.10; middle toe, 1.50. Fifth quill longest; first much 

 shortest; outer six appreciably sinuated. Graduation of the tail, 

 1.40. 



Other specimens examined. Mus. Acad. N. S. Philad., 2 ; Boston Soc, 1 ; 

 G. N. Lawrence, 2 ; Total, 6. 



