Mr. Henshaw has so satisfactorily defined[[71]] the characters which respectively distinguish the Cassin’s and Plumbeous Vireos from solitarius proper, as well as from each other, that there is no room for any further remarks on what, previous to his examination, was a very tangled problem. The specimens mentioned below are all unmistakably referable to cassini, although one or two of them present slight approaches to plumbeus. It is a singular fact that Mr. Stephens did not meet with any typical examples of the latter race.
209, ♂ ad., Cienega Station, April 16. Length, 5.40; extent, 8.70. “Iris brown; bill dark horn-color above, lighter below; legs dark bluish.”
214, ♀ ad., same locality and date. Length, 5.60; extent, 9.10; wing, 3; tail, 2.44.
236, ♀ ad., Tucson, April 19. Length, 5.60; extent, 8.70; wing, 2.89; tail, 2.41.
316, ♀ ad., Tucson, May 2. Length, 5.30; extent, 8.50; wing. 2.71; tail, 2.26.
346, ♀ ad., Tucson, May 7. Length, 5.30; extent, 9; wing, 2.76; tail, 2.23. “Very fat. Would not have laid for a long time.”
354, ♂ ad., Santa Rita Mountains, May 11. Length, 5.10; extent, 8.80; wing, 2.82; tail, 2.27. “Iris brown; bill nearly black, bluish at base below; legs lead-color.”
47. Vireo huttoni stephensi var. nov. Stephens’ Vireo.
Ch. Sp.—♂ ♀ Similis V. huttoni sed rostro robustiori, alis longioribus. Supra griseo-cinereus, infra fusco-albidus. Uropygio et marginibus caudæ sordide virenti-olivaceis. Alis albo bifasciatis; remigibus albo-marginatis. Loris et orbe circum-oculari (macula fusco-brunnea in palpebra superiori excepta), cinereo-albis.
Adult ♂ (No. 5,728, author’s collection—collector’s No. 41—Chiricahua Mountains, Arizona, March 14, 1881. F. Stephens). Bill stout; wings from .30 to .40 inches longer than tail. Above grayish-ash; the crown, vertex and sides of head and neck nearly pure; the back faintly tinged with olive; the rump and an edging on the tail feathers, dull olive-green. Wings with two nearly confluent bands on the coverts, and the outer edges of the inner secondaries, broadly white; outer quills edged more narrowly with the same color. Beneath brownish or smoky-white, with a mere wash of yellowish on the sides and crissum. Upper eyelid dusky brown; remainder of orbital region, with the lores, ashy-white in decided contrast with the nearly clear cinereous of the head generally. Lining of wings white.