TROCHILIDJE: HUMMINGBIRDS. 549 



C an'nae. (To Anna, Duchess of Rivoli. Figs. 362. 3fi3.) Anna Hummingbird. (^: Top 

 of head with metallic scales like those of throat, the latter prolonged into a ruff; the iridescence 

 lilac-crimson, covering whole head and throat, except a separating line through eye. Tail 

 deeply forked ; middle feathers very broad and rounded, the lateral all successively more nar- 

 rowed and linear, especially the outermost, but all M'ith obtuse ends. Outer primary narrower 

 than the next, but of no special peculiarity. Back and middle tail-feathers golden-green ; 

 other tail-feathers, like the wing-quills, purplish-dusky, without any rufous or white ; under 

 parts whitish, nearly everywhere glossed over with green. Length about 3..50 ; wing 1.90; 

 tail 1..3.5; bill 0.75. 9 like J excepting on head and tail. No metallic scales on head; crown 

 like back, golden-green ; throat whitish, with dusky, often metallic red, specks. Tail rounded, 

 slightest central emargination, all but middle feathers (which are like back) green (or gray) at 

 base, then black for a space, then white-tipped (no rufous). Under parts gray, with much 

 green gloss. California, common, resident; L. Cala ; S. Arizona; Guadalupe Isl. 

 C. cos'tae. (To The Marquis de Costa, of Chainbery, France. Fig. 304.) Costa Hum- 

 mingbird. (J : Metallic scales on top and sides of head as well as throat, latter prolonged 

 into a Haring ruff; iridescence violet, sapphire, steel-blue or purplish, not red. Tail lightly 

 forked ; middle feathers broad and obtuse, lateral narrowing successively, but outermost 

 abruptly narrowest, falcate — very noticeable. Outer primary simple. Back and middle tail- 

 featliers golden-green ; other tail-featlicrs like wing-quills, pur- 

 plish-dusky. Below whitish, the belly gray, glossed with golden- 

 green. Small: length 3.00-3.25: wing 1.75-1.80; tail 1.00; bill 

 0.67. 9 • No scales on head. Tail simply rounded, or with least 

 possible central emargination ; lateral tail-feathers narrowing, but 

 outermost not noticeably different from the next. Crown like back ; 

 throat like belly, with dark specks. Middle tail-feathers like back, yiq. .■?G4. — Costa Humming- 



others green or gray, then black, then white-tipped. Entire under bird, cf, 9, nat. size. (Elliot.) 

 parts whitish. Compared with anna, our only other species with scales on crown in ^, costce 

 is smaller; throat ruff much more flaring; glitter entirely different (not red at all); tail less 

 forked, with ahiiost acicular falcate outermost feather; under parts less glossed with green. 

 9 costce lacks green gloss on under parts, which are more white, has much narrower tail- 

 feathers, and is smaller, in comparison with 9 anna. 9 costce more closely resemlilos 9 '•*^'<''- 

 luln calliope, but the latter has traces at least of rufous on tail and under parts. Also resembles 

 9 Trochiliis, but has cdl the lateral tail-feathers white-tipped. Arizona, Nevada, and southern 

 California, Utah, and New Mexico, and southward in migrations in L. Cala. and W. Mexico. 

 SELAS'PHORUS. (Gr. ae\as, selas, light; (f)op6s, pharos, bearing.) Lightning Hum- 

 MF.KS. Bill slender and subulate; frontal feathers covei'ing nasal scale. Tail in ^ 9 graduated 

 or rounded, not forked, and extensively* rufous or tij)ped with white ; central much broader 

 than lateral feathers. Details of shapes of feathers varying with species and sexes (see de- 

 scriptions, and figs. 365, JJ66). Outer primary, or 2 outer ones, of ^ abruptly attenuate, the 

 en<l bowed ; inner 6 primaries not abruptly narrower than those farther outward. Tarsi naked. 

 Bill black. A metallic gorget in ^, little or not produced into a ruff; no scales on crown (ex- 

 cept ill floresii — if this species belongs here). 9 lacking gorget, and tail white-tip|ted. Eggs 

 of our species indistinguishable, nearly or quite O..")0 X 0.;W. 



S. flore'sii. (To Signor Floresi, of Mexico.) Floresi'.s IIum.miNGBIRD. Adult ^ : Crown 

 glittering red with metallic scales, like the gorget, as in the genus Calypte (to which the bird 

 may belong — in part at least): tlius distinguished from any other species of Selasphonis. 

 Miiidle ])air of tail-feathers green and rufous; outermost pair dusky; belly white ; sides and 

 flanks green. Length .3.25 ; wing 1.75; tail 1.40; culnien 0.65. 9 unknown. The alleged 

 species is not well established, eitlirr grnerically or specifically; and its occurrence in liie U. S. 

 is accidental. It was originally described from Bolafios, Mexico, by Goui.d, Mou. Troch. iii, 



