GEOTnLYPIS macgillivrayi. 435 



Lht of ,sj)ccimc)iii. 



750, eggs (4); mouth of Tnickee River, May 10, 1808. Nest in snge busli, in 

 moist depression. 



883, juv.: Bnby Valley, Nevada, August 29, 1808. 51— Of— (!)— If. Upper 

 mandiblf, sepia-black, the toraiura pale brownish-yellow; lower, dilute lilaceous-sei)ia; 

 iris, plumbeous-brown; tarsi aud toes, dilute pinkish-sepia, the toes strongly washed 

 with yellow. 



899, 9 juv.; Secret Valley, Nevada, September 23, 1808. 51— 7— (?)— IJ. Same 

 remarks. 



953,3 (uJ.; Deep Creek, Utah, October 5, 1808. 5^^;.— 7— (!)— IJ. Bill, black; 

 commissure and basal half of lower mandible, dilute brownish-lilac; iris, bister; tarsi 

 and toes, uniform sepia. 



1400, nest and eggs; valley of Weber River, June, 1809. [J. C. Olmsted.] 



Geothlypis macgillivrayi. 



nicOillivrny's WarbSer. 



Si/lrla macgilUvrayi, Audubon, Orn. Biog., V, 1839, 75, pi. 390, figs. 4, 5. 

 Ucnthhjpis macgillivrayi, Baied, B. N. Am., 1858, 244, pi. 90, fig. 4; Catal., 1859, 



No. 173; Review, 1805, 227. — Coopek, Orn. Cal., 90. — CouES, Key, 1872, 



107; Check List, 1873, No. 99.— B. B.& R., Hist. N. Am. B., 1, 1874, 30;{, pi. 



XV, figs. 4, 5. — Henshaw, 1875, 205. 

 Ocotlth/pis Philadelphia var. macgillivrayi, Allen, Bull. Mus. Comp. Zool., ill, 



July, 1872, 175.— RiDGWAY, Am. Journ. Sci. & Arts, Dec, 1872, 459. 

 Geothlypis Philadelphia, a. macgillivrayi, CouES, B. N.W., 1874, 75. 



Representing the Maryland Yellow-throat in the mountains, this species 

 was found in all the fertile canons from the Sierra Nevada to the Uintahs. 

 It inhabited the rank herbage near the streams, or the undergrowth of the 

 thickets and aspen copses. We did not hear the song of this species, but 

 Avere very familiar with its ordinary note, a strong cJiip, greatly resembling 

 that'of the Indigo-bird, or its western representative {Cijanospiza cyanen and 

 C. (t'.iia'uu), the notes of both old and young being alike. 

 List of specimens. 



175, 9 jui\; West Humboldt Mountains, Nevada, September 0, 1SG7. 5h — 7y^. — 

 2-j% — 2Jjj— ^jj— f — 21— li. Upper mandible, brownish-black; commissiue and lower 

 mandible, brownish lilaceouswhite, the latter darker terminally ; iris, hazel; tarsi and 

 toes, brownish- white. 



900, <? juv.; East Ilumboldt Mountains, Nevada (Camp 23), September 0, ISOS. 

 5i — 7A — (?)— 2fL. Iris, grayish-sepia; tarsi and toes, pinkish-white. 



900, <? ad.; East Humboldt Mountains, September 8, 1808. 5,A.— 7g— (?)— 2i. 

 Upper mandible, brownish-plumbeous, i)aler toward commissure ; lower, paler brown- 

 ish, lilaceouswhite, darker terminally; h-is, grayish-sepia; tarsi and toes, sepia-white. 



