11. SXELGIDOPTERYX. 207 



(1872) ; Sol. 8f Salv. Nommcl. Av. Neotr. p. 15 (1873) ; Coues, 

 B. N.- West, p. 90 (1874) ; Baird, Brewer, ^ Ridgw. Hist. N. Atner. 

 B. p. 350, pi. 16. fig. 12 (1874) ; Ridgw. Rep. Surv. 40th Par. iv. 

 p. 446 (1877) ; Coties, B. Color. Vail. p. 438 (1878) ; Belding, 

 Proc. U.S. Nat. Mus. i. p. 409 (1878) ; Ridgw. op. cit. iii. p. 175 

 (1880); Coues, Check-list N. Amer. B. p. 43 (1882); Sah. <§• 

 Godm. Biol. Centr.-Amer., Aves, i. p. 237 (1883) ; Coues, Key N. 

 Amer. B. p. 324 (1884). 



Cotile serripennis, Gray, Hand-l. B. i. p. 73, no. 867 (1869). 



Cotile fulvipeunis. Gray, t. c. p. 73, no. 869 (1869). 



Stelgidopteryx fulvipennis, Salv. P. Z. S. 1870, p. 184 ; <S'e^. i^ Salv. 

 Nommcl. Av. Neotr. p. 15 (1873) ; Boucard, P. Z. S. 1878, p. 67. 



Adult male. General colour above brown, the lesser and median 

 wing-coverts like the back ; median and greater coverts blackish 

 brown, washed externally with the same colour as the back ; bastard- 

 wing, primary-coverts, and quills blackish brown, the inner secon- 

 daries edged with lighter brown ; tail-feathers dark brown, paler 

 towards the base of the inner web ; head a trifle darker brown than 

 the back ; a narrow line of whity brown from the base of the fore- 

 head above the eye ; lores blackish ; ear-coverts dark brown ; cheeks, 

 throat, and breast, as well as the flanks and sides of the body, 

 light brown, shaded with hoary whitish on the throat and fore 

 neck, the chin and throat slightly washed with rufous ; abdomen 

 and under tail-coverts pure white ; the breast-feathers with a few 

 dusky shaft-lines ; thighs white, with brown bases ; axillaries brown ; 

 under wing-coverts brown, with hoary-white edges to those near the 

 edge of the wing. Total length 4-8 inches, culmen 0-35, wing 4*45, 

 tail 2-25, tarsus 0-4. 



Adult female. Differs from the male in wanting the saw-like 

 edges to the first primary. 



A pair in the Salvin-and-Godman collection, from Presidio, 

 Mexico (Ferrer), measure as follows : — 



a. S ad. Total length 4'9 in., culmen 0-35, wing 4-4, tail 2-1, tarsus 0*45. 



b. 2 ad. „ „ 4-4 „ 0-3, „ 4-1, „ 1-9, „ 0-45. 



Young. Distinguished from the adult by the light rufous edges to 

 the wing-coverts and inner secondaries ; the whole of the back also 

 washed with rufous edges to the feathers ; the throat and breast 

 light rufous, and the flanks also slightly washed with rufous ; under 

 wing-coverts broadly edged with rufous ; gape yellow. 



Obs. The rufous on the throat in this species seems to me to be 

 indicative of immaturity, as in full breeding-plumage it is nearly 

 obsolete. The white edgings to the inner secondaries, which are 

 seen in all specimens shot in the winter months, appear to me to be 

 a distinct sign of winter plumage, as in breeding birds these white 

 margins become gradually obsolete. 



Ilah. North America, wintering in Central America as far south 

 as Guatemala. 



a. $ ad. sk. Carlisle, Pa., May 11 (S. F. U.S. Nat. Museum [P.]. 

 Baii'd). 



