53. MI31U8. 351 



Hand-l B. i. p. 2G1, no. 3817 (1869) ; Peh. Orn. Bras. p. 95 f 1871 V 

 Scl. P. Z. S. 1871, p. 268 ; Semper, P. Z. S. 1872, p. 648 • Scl &■ 

 Salv. Nomencl. Av. Neotr. p. 3 (1873) ; Lawr. Bidl. U.S. Nat. Mm 

 no. 4, p. 12 ; Scl. ^'- Salv. P. Z. S. 1879, p. 492 ; Laior. Proc. U.S 

 Nat. Mus. i. pp. 187, 268, 278, 486 (1878) ; Salv. ^- Godm. Biol. 

 Centr.-Amer., Aves, i. p. 36 (1879). 



Miimis melauopterus, Lawr. Ami. Lye. N. Y. v. p. 35 pi 2 ^1849) • 

 Sclater,P. Z.S. 1859, p. 342; id. Cat. Amer. B. p. 9 (1862) • Scl 

 ^ Salv. P. Z. S 1868, p. 166 ; Gray, Hand-l. B. i. p. 261, no. 3834 • 

 Finsch, P. Z. S. 1870, p. 553. ' 



Mimiis columbianus, Cah. Mks. Hein. Th. i. p. 82 (1850). 



MimiLs gi-acilis. Cab. Mus. Hein. Th. i. p. 83, note ; Sclater, P Z S 

 1859, p. 343 ; id. Sf Salv. Ibis, 1859, p. 7 ; Cab. J. f. 0. 1860, p 410 • 

 G. C.Taylor Ibis, 1860, p. 110; Oicen, Ibis, 1801, p. QO; Sclater, 

 Cat. Amer. B. p. 9 (1862) ; Baird, Eevieto Amer. B. p. 54 (1864) • 

 SalvDi, Ibis, 1866, p. 202 ; Laivr. Aim. Lye. N. Y. ix. p 91 (1868) • 

 n^aSf-- '^■f- ^' ^^^^' P- ^'^^ ' ^'"y^ ^'""^-^- ^- i- P- 262, no. 3835 



Adult male. General colour above light ashy bro\rn, with slight 

 indications of dusky centres on the feathers of the crown, the maittle 

 a little more dusky than the lower back and rump ; lesser wino-- 

 coverts like the back ; median and greater coverts dark brown, edged 

 with ashy brown, tipped with dull white, forming a double' wing- 

 bar; bastard wing-fcathcrs and primary-coverts blackish, with°a 

 slight tip of ashy white ; quills dark brown, externally light ashy, 

 more hoary in the middle of the primaries and towards the end of 

 the secondaries ; primaries with a tiijy concealed white spot at the 

 extreme base ; tail-feathers blackish brown, all but the centre 

 feathers tipped with white, which increases towards the outermost 

 where the white extends along the upper web ; a tolerably broad 

 white eyebrow ; lores blackish, with ashy tips to the feathers ; sides 

 of face and ear-coverts ashy whitish, faintly mottled with dusky 

 tips, producing a slightly barred appearance, the upper margin of 

 the ear-coverts dusky brown; throat and under surface of" body 

 generally dull white, with a shade of ashy pervading the lower 

 throat, breast, and flanks ; the lower flanks slightly streaked with 

 blackish ; axillaries and under wing-coverts whitish, with distinct 

 blackish-brown centres to the feathers ; quills dusky brown below 

 ashy along the edge of the inner web. Total length 10-5 inches' 

 culmcn 0-95, wing 4-4, tail 4-9, tarsus 1-3. ' 



Adult female. Exactly like the male in plumage. 



Young. More brown than the adults, with dusky-brown centres 

 to the feathers of the upper surface ; below white, with dull brown 

 spots on the fore neck and sides of body. {Mus. Salvin and 

 Godman.) 



Two specimens from Santa Martha, in the collection of Messrs 

 Salvin and Godman, have the under surface whiter than in bird?- 

 from other localities. 



The Graceful Mockijig-Thnish is found in Central America, in 

 the isthmus of Tehuan tepee and Northern Yucatan, all over Guate- 

 mala as far as Comayagua. It reoccurs in Colombia, and extends 



