EMPIDONAX HAMMONDI. 543 



911, ? ad.; Camp 23, East Humboldt Moniitains, September 8, 1808. fii—SJ— 

 (?) — 2/!^. Upper mandible deep black, terminal third of lower deep mahogany-brown, 

 basal portion, with rictus, pale chrome-yellow ; interior of mouth, rich Indian yellow ; 

 iris, umber; tarsi and toes, deei) black. 



911a, 2 ad.; East Ilumboldt Mountains, September 8, 18GS. 5.3— 8J— (?)— L'^. 

 Same remarks. 



912, 9 ad.; Camp 33, East Humboldt Mountains, September 8, 1SG8. 5|— Sg— 

 (?) — 2y'g. Same remarks. 



934, i jm:; Camp 25, Humboldt Valley, September IG, 18G8. 5J— 8f— (?)— 2i. 

 Bill, black, basal two-thirds of lower mandible, lilaceous-white; iris, very dark sepia; 

 tarsi and toes, plumbeous-black. (This specimen is remarkable for its pure and very 

 light ashy colors.) 



940, ? ad.; Secret Valley, Nevada, September G, 1807. 



1248, 1249, nests and eggs ; Parley's Park, Wahsatch Mountains, Utah Territory, 

 June 23, 1SG9. Nests in aspeucopso. 



1281, nest and eggs (4) ; Parley's Park, June 25, 1809. Nest in crotch of dead 

 aspen, along stream. 



1.334, nest and eggs; Parley's Park, June 28, 1SG9. Nest in aspens. 



133G (4), 1337 (3), nests and eggs; Parley's Park, June 28, 18G9. Nests in aspens. 



1353, nest and eggs (4) ; Parley's Park, June 28, 1809. Nest in service-berry bush. 



1515, 2 juv.; Parley's Park, August 10, 18G9. G — 9. Lower mandible, pale pink- 

 ish. 



Empidonax HAMMONDI. 



IlatiiDiiosKlN Flycntclier. 



Tyrannula hammondii, Xantus, Pr. Ac. Nat. Sci. Philad., 1858, 117. 

 Empidonax. hammondii, Baikd, B. N. Am., 1858, 119, pi. 70, fig. 1; Cat. N.Am. B., 



1859, No. T45.— Cooper, Orn. Cal., I, 1870, 330.— Coues, Key, 1872, 17(i; 



Check List, 1873, No. 200; B. N.W., 1874, 257.— B. B. & 11, Hist. N. Am. B., 



if, 1874, 383, pi. XLiv, fig. 7.— Hensuaw, 1875, 302. 



Tliis delicate little Flycatcher was not met with anywhere as a siunnKn- 

 resident, but during its autumnal migration was found to be vciy common 

 on the East Ilumboldt Mountains. It inliabited exclusively tlie aspen- 

 groves and copses of tall alders and willows in the higher canons, and 

 seemed to keep in the darkest and most secluded places. The only note 

 heard was a soft 2nt. 



List of specimens. 



893, (? ad.; East Humboldt Mountains, Nevada (Calnp 22), September 5, 1808. 

 5J— 8J — 2j^^ — 2y3jj — H — j?^ — 2J — (?). Upper mandible, deep black, lower dilute brown, 

 the edge, with rictus, orange-yellow; iris, dark bister; tarsi and toes, black. 



894, <? ad.; East Humboldt Mountains (Camp 23), September 0, 1808. 5^— 8g— 

 (■?) — 2y'ij. Same remarks. 



