208 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Vireo bellii (not of Audubon) Coopek, Proc. Calif. Ac. Sci., 1861, 122 (Fort 

 Mojave, Arizona). 



FireofceZKHENSHAw, Eep. Orn. Spec. Wheeler's Surv. for 1873 (1874), 105(GilaR., 

 Arizona); Zool. Exp. W. 100th Merid., 1875, 225 (do.); List Birds Arizona, 

 1875, 157.— CouES, Birds Ool. Val., 1878, 526, part (in synonymy). 



Vireo pusUlus (not of Ooues, 1866) Coues, Proo. Ac. Nat. Sci. Phila., 1868, 83 

 (Camp Grant, Arizona) ; Check List, 1873, no. 132, part; 2d ed. , 1882, no. 184, 

 part; Birds Col. Val., 1878, 531, part (Arizona).— Baird, Review Am. Birds, 

 1866, 360, part (Date Creek, Arizona).— Cooper, Orn. Cal., 1870, 124,.part 

 (Arizona). — Baird, Brewer, and Ridgway, Hist. N. Am. Birds, i, 1874, 

 391, part (Arizona). — Hbnshaw, List Birds Arizona, 1875, 157; Zool. Exp. 

 W. 100th Merid., 1875, 226 (Camp Grant, Arizona, July; crit.). — Stephens, 

 Bull. Nutt. Orn. Club, iii, 1878, 93 (Gila R., Arizona, breeding).— Brewster, 

 Bull. Nutt. Orn. Club, vii, 1882, 144 (Tucson, Cienega Station, and Camp 

 Lowell, Arizona; descr. nest; measurements, etc.); Auk, ii, 1885, 197 (Camp 

 Lowell; descr. young). — Beldinq, Proc. U. S. Nat. Mus., vi, 1883, -343 

 (Guaymas, Sonora). — Gadow, Cat. Birds Brit. Mus., viii, 1883, 302, part 

 (Arizona).— Bailey (Florence M.), Handb. Birds W. U. S., 1902, 400, part. 



V[ireo'] punUus Cotjes, Key N. Am. Birds, 2d ed., 1884, 335, part. — Ridgway, 

 Man. N. Am. Birds, 2d ed., 1896, 478, part. 



Vireo bellii pudllm Ridgway, Proc. U. S. Nat. Mus., viii, Sept. 2, 1885, 354, 

 part.— American Ornithologists' Union, Check List, 1886, no. 633a, part. — 

 Oberholser, Proc. Biol. Soc. Wash., xvi, 1903, 17, 18, in text (part). 



V[ire6] bellii pugillm Ridgway, Man. N. Am. Birds, 1887, 478, part.— (?) Morcom, 

 Bull. Ridgway Orn. Club, no. 2, 1887, 51, part (Fort Yuma, Arizona, 

 breeding). 



Vireo bellipmillus Scott, Auk, v, 1883, 33 (Santa Catalina Mts., etc., s. Arizona, 

 breeding up to 4,000 ft. ). 



VIREO BELLII PUSILLUS (Coues). 

 , LEAST VIREO. 



Similar to V. h. wriionx., but still grayer above and whiter beneath; 

 the upper parts between olive-gray and mouse gray without distinct 

 tinge of greenish olive e;scept on rump and upper tail-coverts (and there 

 obvious only in fresh plumage); under parts nearly pure white, includ- 

 ing under tail-cpverts, the sides and flanks washed with pale olive-graj' 

 or grayish olive, but with only the merest trace of j'ellow tinge; wing 

 and tail averaging longer. Young with upper parts decidedly paler 

 and grayer, and under parts of body, with .under tail-coverts, pure 

 white throughout. 



AaMltmale.—\ji\^^^ (skins), 104r-113 (109.7); wing, 52.5-59 (55.4); 

 tail, 47-54 (50.8); exposed culmen, 9-10 (9.4); tarsus, 18-19.5 (19); 

 middle toe, 9.5-10 (9.9).« 



Adult female.— Length (skins), 105-114 (109.9); wing, 53.5-56 



a Eighteen specimens. 



