464 



SYSTEMATIC SYNOPSIS. —PICARIJE— CYPSELIFOBMES. 



entirely green, these having dark ends in rufus ? ; rufous on lateral tail-feathers confined tp 

 their bases and of less extent than the black, while in nvfus 9 the rufous equals or exceeds the 

 black area. The next to the middle tail-feather in platycereus 9 is green, with only rufous 

 edging of outer web near base, short black end, and white tip ; in rufus 9 the same feather is 

 rufous on both webs to an extent equal to the green, black, and white spaces all together. 

 Though such details are not absolutely constant, they suffice to distinguish all the many speci- 

 mens I have examined. (See also S. rvfus 9 •) Southern Rocky Mt. region, U. S. and south- 

 ward. N. to Wyoming, Idaho, Utah, Nevada ; Sierras Nevadas of Cahfornia. 

 138. CALiYP'TE. (Gr. KaXynrr], Kalupte, a proper name.) Helmet Hummers. Crown of ^ 

 with metallic scales like the gorget, which is prolonged into a ruff; outer primary not attenu- 

 ate ; tail of ^ forked, the outer feather abruptly nan-ow and linear, of 9 slightly double- 

 rounded. No peculiarity of primaries. Bill ordinary, as in Selasphonis or Trochilus; black. 

 No rufous color anywhere. Tail of $ unvaried ; of 9 white-tipped. (Our only genus with bill 

 ordinary and scales on crown of (J.) 

 414. C. an'nee. (To the Duchess of Rivoli. Figs. 310, 311.) Anna Humming-bird. <J: Top of 

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

 lUac-crimson, covering 

 whole head and throat, 

 except a separating line 

 through eye. Tail deeply 

 forked ; middle feathers 

 very broad and rounded, 

 the lateral all succes- 

 sively more narrowed and linear, especially the outermost, 

 but all still with 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 

 No metallic scales on head ; crown 

 Tail gently rounded, with slight- 



FiG. 311. —Anna Humming-bird, <f , 

 nat. size. (From Elliot.) 



Pig. 310. — Anna Humming-bird, (f, 

 9, nat. size. (From Elliot.) 



1.35 ; bill 0.75. 9 like the ^ excepting on head and tail. 



like back, golden-green ; throat whitish with dusky specks. 



est central emargination, all but the middle feathei'S (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. 



C. cos'tae. (To — Costa. Fig. 312.) Costa Humming-bird. ^ : Metallic scales on top and 

 sides of head as well as throat, latter prolonged into a flaring ruff; the iridescence violet, sap- 

 phire, steel-blue or purplish, not red. Tail lightly forked ; middle 

 feathers broad and obtuse, lateral narrowing successively, but the 

 outermost abruptly nan-owest, falcate — very noticeable. Outer 

 primary simple. Back and middle tail-feathers golden-green; 

 other tail-feathers like the wing-quills, purplish-dusky. Below 

 whitish, the belly gray, glossed with golden -green. Small: length 

 3.00-3.25; wing 1. 75-1. SO ; tail 1.00; bill 0.67. 9 : No scales fig. 312. -Costa Humming- 

 on head. Tail simply rounded, or with least possible central bird, cf , ? • nat. size. (EUiot.) 

 emargination ; lateral tail-feathers narrowing, but outermost not noticeably different from the 

 next. Crown like back; throat like beUy, with dark specks. Middle tail-feathers like back, 

 others green or gray, then black, then white-tipped. Entire under parts whitish. Compared 

 with annce, the only other with scales on crown in ^, costce is smaller: throat ruff much 

 more flaring ; glitter entirely difi'erent (not red at all) ; tail less forked, with almost acicular 



