BIRDS OF NORTH AND MIDDLE AMERICA. 195 



VIREO HUTTONI HUTTONI Cassin. 

 HTTTTON'S VIREO. 



Adults {sexes alike). — Above plain olive, becoming slightly more 

 greenish olive posteriorly; wings and tail dusky with pale yellowish 

 olive edgings; middle and greater wing-coverts rather broadly tipped 

 with pale yellowish olive or pale olive-buff, producing two distinct 

 bands across wing, and tertials broadly edged with the same; auricular 

 regipn and sides of neck slightly paler olive than pileum and hindneck, 

 fading gradually below into pale buff}^ olive or dull olive-buff on sub- 

 orbital and malar regions, chin, throat, and chest, this into deeper 

 buffy olive on sides and flanks, the median portion of breast, abdomen, 

 and under tail-coverts ver}' pale olive-buff' (sometimes whitish on lower 

 abdomen and anal region); an indistinct supraloral line and a distinct 

 broad orbital ring pale dull oTive-yellowish, the latter interrupted on 

 middle portion of upper eyelid by a dusky spot; axillars and under 

 wing-coverts yellowish white, sometimes faintly tinged with olive; 

 inner webs of remiges and rectrices edged with yellowish white; bill 

 horn color, the mandible paler; iris brown; legs and feet dusky horn 

 color in dried skins (grayish blue in life?). 



Young. — Similar to adults, but much grayer olive above, under 

 parts much paler (chin, throat, and chest very pale olive-grayish), and 

 auricular and suborbital regions pale as throat, etc., thus reducing 

 contrast with pale orbital ring and supraloral line. 



Advlt wifflfe.— Length (skins), 110-120 (115.8); wing, .59.5-63 (60.9); 

 tail, 47-50 (48.6); exposed culmen, 8.5-9 (8.7); tarsus, 18.5-20 (19); 

 middle toe, 10-11 (10.7).« 



Adidt female.— Length '{skins), 109-119 (114.8); wing, 59-62 (60.2); 

 tail, 48-51 (48.8); exposed culmen, 8-9.5, (8.8); tarsus, 18-19.5 (18.9); 

 middle toe, 10-11 (10.5)." 



Coast and interior districts of California, west of the Sierra Nevada,^ 

 north to Marin and Siskiyou counties, south to San Diego County; 

 resident. 



Vireo hutkmi Cassin, Proc. Ac. Nat. Sci. Phila., v, 1851, 150; vi, pi. 10, fig. 1 (Monte- 

 rey, California; coll. U. S. Nat. Mus. ). — Baied, in Stansbury's Rep. Gt. Salt 

 Lake, 1852, 328 (California); Rep. Pacific R. R. Surv., ix, 1858, 339, part 

 (Monterey, California); ed. 1860 (Birds N. Am.), atlas, pi. 78, fig. 2; Cat. 

 N. Am. Birds, 1859, no. 249, part; Review Am. Birds, 1866, 357, part (San 

 Francisco, Napa Valley, and Monterey, California). — Cooper, Cm. Cal., 

 1870, 121; Am. Nat., viii, 1874, 17.— Coues, Check List, 1873, no. 130; 2d 

 ed., 1882, no. 182; Birds Col. Val., 1878, 525, part— Baied,. Bbewbk, and 

 EiDGWAY, Hist. N. Am. Birds, i, 1874, 387, part, pi. 17, fig. 12.— Henshaw, 

 Rep. Orn. Spec. Wheeler's Surv., 1876, 236 (Santa Barbara, California, breed- 

 ing).— Cooper (W. A.), Bull. Nutt. Orn. Club, iii, 1878, 68 (Santa Cruz, 

 California; breeding habits; descr. nest and eggs).— Ridgway, Nom. N. Am. 



"Ten specimens. 



