170 Mr. R. Ridgway on the Genus Helminthophaga. 
single one of them. The coloration in this instance is as if 
the black had been entirely removed from the gular region 
and anriculars of a typical adult male of H. chrysoptera, 
leaving these parts entirely pure white., even to the roots of 
the feathers. The first plumage of the latter species is un¬ 
described and unknown to me; the adult female, however, 
has, at all seasons, these parts of a dull ash-grey on the surface, 
darker on the concealed portion of the feathers. 
The names adopted are based on the following references :— 
1. Helminthophaga pinus, Baird, Birds N. Am. 1858, 
p. 254. 
Certhiapinus, Linn. S. N. i. 1766, p. 187. 
2. Helminthophaga lawrencii, Herrick, Pr. Acad. Nat. 
Sci. Philad. Nov. 1874, p. 220, pi. 15. 
3. Helminthophaga chrysoptera, Cabanis, Mus. Hein. 
1850-51, p. 20. 
Motacilla chrysoptera , Linn. S. N. i. 1766, p. 333. 
4. Helminthophaga leucobronchialis, Brewster, Ame- 
erican Sportsman, Oct. 17, 1874, p. 33. 
5. Helminthophaga bachmani, Cabanis, Journ. fur Orn. 
iii. 1855, p. 475. 
Helinaia bachmani , Aud. Orn. Biogr. ii. 1834, p. 483, 
pi. 183. 
6. Helminthophaga ruficapilla, Baird, B. N. Am. 1858, 
p. 256. 
Sylvia ruficapilla, Wilson, Am. Orn. iii. 1811, p. 120, pi. 
xxvii. fig. 3. 
7. Helminthophaga Virginia, Baird, B. N. Am. 1858, 
(under expl. plates, 1870) pi. lxxix. fig. 1. 
8. Helminthophaga luci^:. Cooper, Pr. Cal. Acad. Sc. 
July 1861, p. 120. 
9. Helminthophaga celata. 
a. celata . 
Helminthophaga celata, Baird, B. N. Am. 1858, p. 257. 
Sylvia celata, Say, Long's Exped. i. 1823, p. 129. 
